Display panel, method for driving the same and anti-peeping system

• US 10,147,343 B2
• Filed: 04/27/2017
• Issued: 12/04/2018
• Est. Priority Date: 07/29/2016
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Xu, Liyan, Zhang, Chunbing
• Primary Examiner(s): Yeung, Matthew
• Application Number:
  US15/576,795
• Publication Number:
  US 20180277026A1
• Time in Patent Office: 586 Days
• Field of Search: None
• 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 2358/00 Arrangements for display data security
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: H10K 59/128 comprising two independent displays, e.g. for emitting information from two major sides of the display
• CPC Class Codes: H10K 59/32 Stacked devices having two or more layers, each emitting at different wavelengths
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]

Abstract

The present disclosure provides a display panel, a method for driving the same, and an anti-peeping system. The display panel comprises a substrate; and multiple pixel units arranged on the substrate in an array, each of the pixel units comprising first self-luminous devices, second self-luminous devices, and quantum dot luminous devices, wherein the first self-luminous devices and the second self-luminous devices are stacked in various sub-pixel regions, the quantum dot luminous devices are disposed in at least two sub-pixel regions, and quantum dot luminous devices disposed in different sub-pixel regions have different luminous colors, wherein the first self-luminous devices are configured to excite the quantum dot luminous devices to emit light during a display period of one frame to display a normal picture, and the second self-luminous devices are configured to be in a turn-off state during the display period of one frame and excite quantum dot luminous devices within a part of the sub-pixel regions to emit light during an interference period of one frame to display an interference picture. The display panel according to the embodiments of the present disclosure realizes an anti-peeping function.

Claims

1. A display panel, comprising:

a substrate; and

multiple pixel units arranged on the substrate in an array, each of the pixel units comprising first self-luminous devices, second self-luminous devices, and quantum dot luminous devices, wherein the first self-luminous devices and the second self-luminous devices are stacked in various sub-pixel regions, the quantum dot luminous devices are disposed in at least two sub-pixel regions, and quantum dot luminous devices disposed in different sub-pixel regions have different luminous colors,

wherein the first self-luminous devices are configured to excite the quantum dot luminous devices to emit light during a display period of one frame so as to display a normal picture, and

the second self-luminous devices are configured to be in a turn-off state during the display period of one frame and excite quantum dot luminous devices within a part of the sub-pixel regions to emit light during an interference period of one frame so as to display an interference picture.

2. The display panel according to claim 1, wherein each of the sub-pixel regions has a quantum dot luminous device disposed therein, and

the quantum dot luminous devices in each of the pixel units are disposed on a same side of the substrate, and are farther from the substrate than the first self-luminous devices and the second self-luminous devices.

3. The display panel according to claim 1, wherein each of the sub-pixel regions has two quantum dot luminous devices having a same luminous color disposed therein, the two quantum dot luminous devices are disposed on opposite sides of the substrate, respectively, and the quantum dot luminous devices are farther from the substrate than the first self-luminous devices and/or the second self-luminous devices.

4. The display panel according to claim 2, wherein the first self-luminous devices in the multiple pixel units are located on one side of the substrate and the second self-luminous devices in the multiple pixel units are located on the other side of the substrate.

5. The display panel according to claim 2, wherein each of the pixel units further comprises an optical filter layer disposed on one side, which is far away from the substrate, of each of the quantum dot luminous devices and configured to filter light emitted by the first self-luminous devices.

6. The display panel according to claim 1, wherein a wavelength of light emitted by the first self-luminous devices is less than that of all the quantum dot luminous devices.

7. The display panel according to claim 6, wherein the first self-luminous devices are Organic Light Emitting Diodes (OLED) or Light Emitting Diodes (LED) that emit blue light, and the quantum dot luminous devices comprises quantum dot luminous devices that emit red light and quantum dot luminous devices that emit green light.

8. The display panel according to claim 6, wherein the first self-luminous devices are Organic Light Emitting Diodes (OLED) or Light Emitting Diodes (LED) that emit ultraviolet light, and the quantum dot luminous devices comprise quantum dot luminous devices that emit red light, quantum dot luminous device that emit green light and quantum dot luminous devices that emit blue light.

9. The display panel according to claim 7, wherein a wavelength of light emitted by the second self-luminous devices is greater than that of at least one of the quantum dot luminous devices.

10. The display panel according to claim 9, wherein the second self-luminous devices are OLEDs or LEDs that emit yellow light.

11. A method for driving the display panel according to claim 1, comprising:

during a display period of one frame, driving the first self-luminous devices in the sub-pixel regions to be in a turn-on state and the second self-luminous devices in the sub-pixel regions to be in a turn-off state; and

during an interference period of one frame, driving the second self-luminous devices in a part of the sub-pixel regions to be in a turn-on state.

12. An anti-peeping system, comprising:

the display panel according to claim 1; and

shutter glasses having lenses configured to be in a light-transmission state during a display period of one frame and be in a light-shielding state during an interference period of one frame.

13. The display panel according to claim 3, wherein the first self-luminous devices in the multiple pixel units are located on one side of the substrate and the second self-luminous devices in the multiple pixel units are located on the other side of the substrate.

14. The display panel according to claim 3, wherein each of the pixel units further comprises an optical filter layer disposed on one side, which is far away from the substrate, of each of the quantum dot luminous devices and configured to filter light emitted by the first self-luminous devices.

15. The display panel according to claim 2, wherein a wavelength of light emitted by the first self-luminous devices is less than that of all the quantum dot luminous devices.

16. The display panel according to claim 3, wherein a wavelength of light emitted by the first self-luminous devices is less than that of all the quantum dot luminous devices.

17. The display panel according to claim 8, wherein a wavelength of light emitted by the second self-luminous devices is greater than that of at least one of the quantum dot luminous devices.

18. A method for driving the display panel according to claim 2, comprising:

during a display period of one frame, driving the first self-luminous devices in the sub-pixel regions to be in a turn-on state and the second self-luminous devices in the sub-pixel regions to be in a turn-off state; and

during an interference period of one frame, driving the second self-luminous devices in a part of the sub-pixel regions to be in a turn-on state.

19. A method for driving the display panel according to claim 3, comprising:

during a display period of one frame, driving the first self-luminous devices in the sub-pixel regions to be in a turn-on state and the second self-luminous devices in the sub-pixel regions to be in a turn-off state; and

during an interference period of one frame, driving the second self-luminous devices in a part of the sub-pixel regions to be in a turn-on state.

20. An anti-peeping system, comprising:

the display panel according to claim 2; and

shutter glasses having lenses configured to be in a light-transmission state during a display period of one frame and be in a light-shielding state during an interference period of one frame.