DISPLAY PANEL MODULE, ORGANIC LIGHT-EMITTING DIODE (OLED) DISPLAY AND METHOD OF DRIVING THE SAME

• US 20150356925A1
• Filed: 12/17/2014
• Published: 12/10/2015
• Est. Priority Date: 06/05/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: LEE, Jae-Hoon, RYU, Do-Hyung, SONG, Jae-Woo, JUNG, Hae-Goo
• Granted Patent: US 9,786,226 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G09G 2310/0205 Simultaneous scanning of several lines in flat panels
• CPC Class Codes: G09G 2310/0218 with collection of electrodes in groups for n-dimensional addressing
• CPC Class Codes: G09G 2310/0281 Arrangement of scan or data electrode driver circuits at the periphery of a panel not inherent to a split matrix structure
• 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

Abstract

A display panel module, organic light-emitting diode (OLED) display and method of driving the same are disclosed. In one aspect, the module includes a display panel divided into a first portion and a second portion and a plurality of scan and data lines divided into groups arranged in the first and second potions. The module further includes a first scan driver configured to sequentially apply scan signals to each of the first and second scan line groups. The first scan driver is further configured to substantially simultaneously apply the scan signals to corresponding scan lines of the first and second scan line groups. The module also includes a first data driver configured to output first data voltages to the first data line group and a second data driver configured to output second data voltages to the second data line group with the same timing as the first data driver.

Claims

1. A display panel module, comprising:

a display panel including a plurality of pixels, wherein the display panel is divided into a first portion and a second portion;

a plurality of scan lines divided into first and second scan line groups and connected to the pixels, wherein the first scan line group is arranged in the first portion and the second scan line group is arranged in the second portion;

a first scan driver configured to sequentially apply scan signals to each of the first and second scan line groups, wherein the first scan driver is further configured to substantially simultaneously apply the scan signals to corresponding scan lines of the first and second scan line groups;

a plurality of data lines divided into first and second data line groups and connected to the pixels, wherein the first data line group is arranged in the first portion and the second data line group is arranged in the second portion;

a first data driver configured to output first data voltages to the first data line group; and

a second data driver configured to output second data voltages to the second data line group with the same timing as the first data driver.

2. The display panel module of claim 1, wherein the first portion is an upper portion of the display panel and the second portion is a lower portion of the display panel.

3. The display panel module of claim 1, further comprising:

a second scan driver configured to scan the first scan line group and the second scan line group with the same timing as the first scan driver.

4. The display panel module of claim 3, wherein the display panel further includes a first long side, a second long side, a first short side and a second short side, wherein the first and second long sides have substantially the same length, wherein the first and second short sides have substantially the same length which is less than that of the first and second long sides and wherein the first scan driver is arranged adjacent to the first short side and the second scan driver is arranged adjacent to the second short side.

5. The display panel module of claim 4, wherein the first scan driver is arranged closer to the first portion than to the second portion and wherein the second scan driver is arranged closer to the first portion than to the second portion.

6. The display panel module of claim 5, wherein the first scan driver comprises at least a first scan integrated circuit (IC) configured to apply first scan signals to the first scan line group and the second scan line group and wherein the second scan driver comprises at least a second scan IC configured to apply second scan signals to the first scan line group and the second scan line group with the same timing as the first scan driver.

7. The display panel module of claim 5, wherein the first scan driver comprises at least a first scan integrated circuit (IC) and a second scan IC configured to apply first scan signals to the first scan line group and the second scan line group and wherein the second scan driver comprises at least a third scan IC and a fourth scan IC configured to apply second scan signals to the first scan line group and the second scan line group with the same timing as the first scan driver.

8. The display panel module of claim 4, wherein the first scan driver is arranged closer to the first portion than to the second portion and wherein the second scan driver is arranged closer to the second portion than to the first portion.

9. The display panel module of claim 8, wherein the first scan driver comprises at least a first scan integrated circuit (IC) configured to apply first scan signals to the first scan line group and the second scan line group and wherein the second scan driver comprises at least a second scan IC configured to apply second scan signals to the first scan line group and the second scan line group with the same timing as the first scan driving unit.

10. The display panel module of claim 8, wherein the first scan driver comprises at least a first scan integrated circuit (IC) and a second scan IC configured to apply first scan signals to the first scan line group and the second scan line group and wherein the second scan driver comprises at least a third scan IC and a fourth scan IC configured to apply second scan signals to the first scan line group and the second scan line group with the same timing as the first scan driving unit.

11. The display panel module of claim 4, wherein the first data driver is arranged adjacent to the first long side and the second data driver is arranged adjacent to the second long side,

wherein the first data driver comprises a plurality of first data integrated circuits (ICs) configured to output the first data voltages to the first data line group, and

wherein the second data driver comprises a plurality of second data ICs configured to output the second data voltages to the second data line group.

12. The display panel module of claim 1, wherein each of the pixels arranged in the first portion comprises:

a switching transistor comprising;

i) a first terminal connected to a data line of the first data line group, ii) a gate terminal connected to a scan line of the first scan line group and iii) a second terminal connected to a first node;

a storage capacitor connected between a high power supply voltage and the first node;

a driving transistor comprising;

i) a first terminal connected to the high power supply voltage, ii) a gate terminal connected to the first node and iii) a second terminal; and

an organic light-emitting diode (OLED) connected between the second terminal of the driving transistor and a low power supply voltage.

13. An organic light-emitting diode (OLED) display, comprising:

a display panel including a plurality of pixels, wherein the display panel is divided into a first portion and a second portion;

a plurality of scan lines divided into first and second scan line groups and connected to the pixels, wherein the first scan line group is arranged in the first portion and the second scan line group is arranged in the second portion;

a first scan driver configured to sequentially apply scan signals to each of the first and second scan line groups, wherein the first scan driver is further configured to substantially simultaneously apply the scan signals to corresponding scan lines of the first and second scan line groups;

a second scan driver configured to scan the first and second scan line groups with the same timing as the first driver;

a plurality of data lines divided into first and second data line groups and connected to the pixels, wherein the first data line group is arranged in the first portion and the second data line group is arranged in the second portion;

a first data driver configured to output first data voltages to the first data line group;

a second data driver configured to output second data voltages to the second data line group;

a power supply configured to supply a high power supply voltage and a low power supply voltage to the display panel; and

a timing controller configured to control the first scan driver, the second scan driver, the first data driver, the second data driver and the power supply.

14. The OLED display of claim 13, wherein the first portion is an upper portion of the display panel and the second portion is a lower portion of the display panel, wherein the display panel includes a first long side, a second long side, a first short side and a second short side, wherein the first and second long sides have substantially the same length, wherein the first and second short sides have substantially the same length which is less than that of the first and second long sides and wherein the first scan driver is arranged adjacent to the first short side and the second scan driver is arranged adjacent to the second short side.

15. The OLED display of claim 14, wherein the first scan driver is arranged closer to the first portion than to the second portion and wherein the second scan driver is arranged closer to the first portion than to the second portion.

16. The OLED display of claim 14, wherein the first scan driver is arranged closer to the first portion than to the second portion and wherein the second scan driver is arranged closer to the second portion than to the first portion.

17. The OLED display of claim 14, wherein the first scan driver comprises at least a first scan integrated circuit (IC) and a second scan IC configured to substantially simultaneously apply first scan signals to the first scan line group and the second scan line group and wherein the second scan driver comprises at least a third scan IC and a fourth scan IC configured to substantially simultaneously apply second scan signals to the first scan line group and the second scan line group with the same timing as the first scan driving unit.

18. The OLED display of claim 13, wherein the timing controller is configured to generate:

i) first and second scan control signals which respectively control the first and second scan drivers, ii) first and second data control signals which respectively control the first and second data drivers, and iii) a power control signal which controls the power supply, wherein the timing controller is further configured to generate each of the control signals based on an input control signal received from an external source, and wherein the timing controller is further configured to;

i) generate first and second data signals based on an input image signal received from the external source and ii) respectively apply the first and second data signals to the first and second data drivers.

19. The OLED display of claim 13, wherein each of the pixels arranged in the first portion comprises:

a switching transistor comprising;

i) a first terminal connect to a data line of the first data line group, ii) a gate terminal connected to a scan line of the first scan line group and iii) a second terminal connected to a first node;

a storage capacitor connected between a high power supply voltage and the first node;

a driving transistor comprising;

i) a first terminal connected to the high power supply voltage, ii) a gate terminal connected to the first node and iii) a second terminal; and

an OLED connected between the second terminal of the driving transistor and a low power supply voltage.

20. A method of driving an organic light-emitting diode (OLED) display, the method comprising:

first and second scan drivers substantially simultaneously scanning a plurality of pixels via a first scan line group and a second scan line group, wherein the first scan line group is arranged in a first portion of a display panel of the OLED display and wherein the second scan line group is arranged a second portion of the display panel;

a first data driver outputting first data voltages to the pixels in the first portion via a first data line group; and

a second data driver outputting second data voltages to the pixels in the second portion via a second data line group with the same driving timing as the first data driver.