DISPLAY SUBSTRATE, DISPLAY APPARATUS AND DRIVING METHOD THEREOF

• US 20170132965A1
• Filed: 04/29/2016
• Published: 05/11/2017
• Est. Priority Date: 05/22/2015
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: HSU, Minghung
• Granted Patent: US 9,892,673 B2
• Time in Patent Office: Days
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/0809 Several active elements per pixel in active matrix panels
• CPC Class Codes: G09G 2300/0814 used for selection purposes, e.g. logical AND for partial update
• CPC Class Codes: G09G 2310/0202 Addressing of scan or signal lines
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2310/0262 The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
• CPC Class Codes: G09G 2310/0297 Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
• CPC Class Codes: G09G 2320/0646 Modulation of illumination source brightness and image signal correlated to each other
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 3/3233 with pixel circuitry controlling the current through the light-emitting element
• CPC Class Codes: G09G 3/3266 Details of drivers for scan electrodes
• CPC Class Codes: G09G 3/3275 Details of drivers for data electrodes
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/1216 the pixel elements being capacitors
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 59/351 : comprising more than three subpixels, e.g. red-green-blue-white [RGBW]

Abstract

A display substrate, display device and driving method thereof. While providing an increased resolution, the display device also has an increased aperture ratio. The display substrate comprises a plurality of pixel units (10) arranged in a matrix. The R sub-pixel, G sub-pixel, and B sub-pixel in each of the plurality of pixel units (10) are connected to a first data line (31), wherein the first data line (31) is configured to provide an R signal to the R sub-pixel in a first time duration (t1), and a B signal to the B sub-pixel in a second time duration (t2). In each of the plurality of pixel units (10), the G sub-pixel is connected to a second data line (32) configured to provide a G signal to the G sub-pixel in the first time duration (t1) and second time duration (t2).

Claims

1. A display substrate, comprising a plurality of pixel units arranged in an array, each of the pixel units at least comprises a R sub-pixel, a G sub-pixel and a B sub-pixel;

wherein, the R sub-pixels, the G sub-pixels and the B sub-pixels of the pixel units in each row are connected with one first scan line;

in each of the pixel units, the R sub-pixel and the B sub-pixel are connected with one first data line, and the first data line is configured to provide a R data signal to the R sub-pixel during a first time period and to provide a B data signal to the B sub-pixel during a second time period;

in each of the pixel units, the G sub-pixel is connected with one second data line, and the second data line is configured to provide a G data signal to the G sub-pixel during the first time period and the second time period;

wherein, the first time period and the second time period are different time periods,

2. The display substrate as claimed in claim 1, wherein,

each of the R sub-pixel and the B sub-pixel comprises a first control unit, a first driving unit, and an organic light emitting diode;

the first control unit is connected with the first scan line, a second scan line, the first data line, and the first driving unit respectively;

during the first time period, under the control of the second scan line connected with the R sub-pixel, the first control unit of the R sub-pixel is configured to input the R data signal provided by the first data line to the first driving unit in the R sub-pixel to drive the organic light emitting diode in the R sub-pixel to emit light;

during the second time period, under the control of the second scan line connected with the B sub-pixel, the first control unit of the B sub-pixel is configured to input the B data signal provided by the first data line to the first driving unit in the B sub-pixel to drive the organic light emitting diode in the B sub-pixel to emit light.

3. The display substrate as claimed in claim 2, wherein, the first control unit comprises a first thin film transistor and a second thin film transistor;

a gate of the first thin film transistor is connected with the first scan line, a drain thereof is connected with a source of the second thin film transistor, and a source thereof is connected with the first data line; and

a gate of the second thin film transistor is connected with the second scan line, and a drain thereof is connected with the first driving unit.

4. The display substrate as claimed in claim 2, wherein, the first control unit comprises a Dual-Gate type thin film transistor;

a first gate of the Dual-Gate type thin film transistor is connected with the first scan line, a second gate thereof is connected with the second scan line, a drain thereof is connected with the first driving unit, and a source thereof is connected with the first data line.

5. The display substrate as claimed in claim 2, wherein, the first driving unit comprises a third thin film transistor;

a gate of the third thin film transistor is connected with the first control unit, a source thereof is connected with a power line, and a drain thereof is connected with the organic light emitting diode.

6. The display substrate as claimed in claim 1 wherein, each of the R sub-pixel and the B sub-pixel further comprises a storage capacitor, one terminal of the storage capacitor is connected with the first control unit and the first driving unit respectively, and the other terminal thereof is grounded.

7. The display substrate as claimed in claim 1, wherein, each of the pixel units further comprises a W sub-pixel, the W sub-pixel in the pixel unit is connected with one third data line, the third data line is configured to provide a W data signal to the W sub-pixel during the first time period and the second time period;

the W sub-pixel is further connected with the first scan line.

8-13. -13. (canceled)

14. A display apparatus, comprising a display substrates the display substrate comprises a plurality of pixel units arranged in an array, each of the pixel units at least comprises a R sub-pixel, a G sub-pixel and a B sub-pixel;

wherein, the R sub-pixels, the G sub-pixels and the B sub-pixels of the pixel units in each row are connected with on first scan line;

in each of the pixel units, the R sub-pixel and the B sub-pixel are connected with one first date line, and the first data line is configured to provide a R data signal to the R sub-pixel during a first time period and to provide a B data signal to the B sub-pixel during a second time period;

in each of the pixel units, the G sub-pixel is connected with one second data line, and the second data line is configured to provide a G data signal to the G sub-pixel during the first time period and the second time period;

wherein, the first time period and the second time period are different time periods.

21. The display apparatus as claimed in claim 14, wherein,

each of the R sub-pixel and the B sub-pixel comprises a first control unit, a first driving unit, and an organic light emitting diode;

the first control unit is connected with the first scan one, a second scan line, the first data line, and the first driving unit respectively;

during the first time period, under the control of the second scan line connected with the R sub-pixel, the first control unit of the R sub-pixel is configured to input the R data signal provided by the first data line to the first driving unit hi the R sub-pixel to drive the organic light emitting diode in the R sub pixel to emit light;

during the second time period, under the control of the second scan line connected with the B sub-pixel, the first control unit of the B sub-pixel is configured to input the B data signal provided by the first data line to the first driving unit hi the B sub-pixel to drive the organic light emitting diode in the B sub-pixel to emit light.

22. The display apparatus as claimed in claim 21, wherein, the first control unit comprises a first thin film transistor and a second thin film transistor;

a gate of the first thin film transistor is connected with the first scan line, a drain thereof is connected with a source of the second thin film transistor, and a source thereof is connected with the first data line; and

a gate of the second thin film transistor is connected with the second scan line, and a drain thereof is connected with the first driving unit.

23. The display apparatus as claimed in claim 21, wherein, the first control unit comprises a Dual-Gate type thin film transistor;

a first gate of the Dual-Gate type thin film transistor is connected with the first scan line, a second gate thereof is connected with the second scan fine, a drain thereof is connected with the first driving unit, and a source thereof is connected with the first data line.

24. The display apparatus as claimed in claim 21, wherein, the first driving unit comprises a third thin film transistor;

a gate of the third thin film transistor is connected with the first control unit, a source thereof is connected with a power line, and a drain thereof is connected with the organic light emitting diode.

25. The display apparatus as claimed hi claim 14, wherein, each of the R sub-pixel and the B sub-pixel further comprises a storage capacitor, one terminal of the storage capacitor is connected with the first control unit and the first driving unit respectively, and the other terminal thereof is grounded.

15. A method for driving a display apparatus comprising a display substrates the method comprises:

during a first scanning period, a scanning signal is input to a R sub-pixel, a G sub-pixel and a B sub-pixel in a pixel unit by a first scan line;

during a first time period of the first scanning period, a R data signal is input to the R sub-pixel by a first data line;

during a second time period of the first scanning period, a B data signal is input to the B sub-pixel by the first data line;

during the first time period and the second time period of the first scanning period, a G data signal is input to the G sub-pixel by a second data line;

wherein, the first time period and the second time period of the first scanning period are different time periods,

wherein the display substrate comprises a plurality of pixel units arranged in an array, each of the pixel units at least comprises a R sub-pixel, a G sub-pixel and a B sub-pixel;

wherein, the R sub-pixels, the G sub-pixels and the B sub-pixels of the pixel units in each row are connected with on first scan line;

in each of the pixel units, the R sub-pixel and the B sub-pixel are connected with one first date line, and the first data line is configured to provide a R data signal to the R sub-pixel during a first time period and to provide a B data signal to the B sub-pixel during a second time period;

in each of the pixel units, the G sub-pixel is connected with one second data line, and the second data line is configured to provide a G data signal to the G sub-pixel during the first time period and the second time period;

wherein, the first time period and the second time period are different time periods.

16. The driving method as claimed in claim 15, wherein, durations of the first time period and the second time period are the same.

17. The driving method as claimed in claim 16, wherein

inputting the R data signal to the R sub-pixel by the first data line during the first time period of the first scanning period specifically comprises:

during the first time period of the first scanning period, the R data signal is input to the first control unit of the R sub-pixel and the first control unit of the B sub-pixel by the first data line; and

an enabling signal is input to the first control unit of the R sub-pixel by the second scan line connected with the R sub-pixel; and

a disabling signal is input to the first control unit of the B sub-pixel by the second scan line connected with the B sub-pixel, so that the R data signal is input to the first driving unit of the R sub-pixel to drive the red organic light emitting diode to emit light;

inputting the B data signal to the B sub-pixel by the first data line during the second time period of the first scanning period specifically comprises;

during the second time period of the first scanning period, the B data signal is input to the first control unit of the R sub-pixel and the first control unit of the B sub-pixel by the first data line; and

an enabling signal is input to the first control unit of the B sub-pixel by the second scan line connected with the B sub-pixel; and

a disabling signal is input to the first control unit of the R sub-pixel by the second scan line connected with the R sub-pixel, so that the B data signal is input to the first driving unit of the B sub-pixel to drive the blue organic light emitting diode to emit light,

26. The driving method as claimed in claim 15, wherein,

each of the R sub-pixel and the B sub-pixel comprises a first control unit, a first driving unit, and an organic light emitting diode;

the first control unit is connected with the first scan one, a second scan line, the first data one, and the first driving unit respectively;

during the first time period, under the control of the second scan line connected with the R sub-pixel, the first control unit of the R sub-pixel is configured to input the R data signal provided by the first data line to the first driving unit in the R sub-pixel to drive the organic light emitting diode in the R sub-pixel to emit light;

during the second time period, under the control of the second scan line connected with the B sub-pixel, the first control unit of the B sub-pixel is configured to input the B data signal provided by the first data line to the first driving unit in the B sub-pixel to drive the organic light emitting diode in the B sub-pixel to emit light.

27. The driving method as claimed in claim 26, wherein, the first control unit comprises a first thin film transistor and a second thin film transistor;

a gate of the first thin film transistor is connected with the first scan line, a drain thereof is connected with a source of the second thin film Page 11 of 13 transistor, and a source thereof is connected with the first data line; and

a gate of the second thin film transistor is connected with the second scan line, and a drain thereof is connected with the first driving unit.

28. The driving method as claimed in claim 26, wherein, the first control unit comprises a Dual-Gate type thin film transistor;

a first gate of the Dual-Gate type thin film transistor is connected with the first scan one, a second gate thereof is connected with the second scan line, a drain thereof is connected with the first driving unit, and a source thereof is connected with the first data one.

29. The driving method as claimed in claim 26, wherein, the first driving unit comprises a third thin film transistor;

a gate of the third thin film transistor is connected with the first control unit, a source thereof is connected with a power line, and a drain thereof is connected with the organic light emitting diode.

18-20. -20. (canceled)