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CN-122024649-A - Display driving integrated circuit, driving controller, display panel, display module, electronic device and driving method thereof

CN122024649ACN 122024649 ACN122024649 ACN 122024649ACN-122024649-A

Abstract

The embodiment of the application provides a display driving integrated circuit, a driving controller, a display panel, a display module, electronic equipment and a driving method thereof, relates to the technical field of electronics and is used for improving display effect. The electronic device improves at least one display problem such as display burst, smear, crosstalk, etc. by one or more of raising a data voltage of a low gray scale, increasing a voltage difference between an anode reset voltage and a cathode power supply voltage, powering up a pre-charge data voltage, powering up a pre-charge anode reset voltage and a cathode power supply voltage, powering up a display frame transition, changing a structure of a pixel defining layer in a display panel, changing a structure of a light emitting layer in the display panel, etc., so as to improve a display effect.

Inventors

  • MENG CHAO
  • QIU YONGYUAN
  • ZHONG JIEXING
  • LI XIAOYU
  • HE HU

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20251024

Claims (20)

  1. 1. A display driving integrated circuit for driving a display panel, the display panel comprising a first subpixel and a second subpixel for emitting different colors of light; The display driving integrated circuit is further configured to: Receiving a first image signal, wherein the first image signal comprises 0 gray scale information corresponding to the first sub-pixel and 1 gray scale information corresponding to the second sub-pixel; outputting a first data voltage to the first sub-pixel according to the 0 gray scale information, and outputting a second data voltage to the second sub-pixel according to the 1 gray scale information; the driving transistors included in the first sub-pixel and the second sub-pixel are P-type transistors, and the first data voltage is smaller than the second data voltage; Or alternatively The first sub-pixel and the second sub-pixel include driving transistors of N-type, and the first data voltage is greater than the second data voltage.
  2. 2. The display driver integrated circuit of claim 1, wherein the display driver integrated circuit is further configured to: receiving a second image signal, wherein the second image signal comprises first gray scale information corresponding to the first sub-pixel; outputting a third data voltage to the first sub-pixel according to the first gray scale information; Receiving a third image signal, wherein the third image signal comprises second gray scale information corresponding to the first sub-pixel; The first gray scale information represents a first gray scale, the second gray scale information represents a second gray scale, and the first gray scale is larger than 0 gray scale and smaller than the second gray scale; The first data voltage, the third data voltage, and the fourth data voltage satisfy a linear relationship.
  3. 3. The display driver integrated circuit of claim 1 or 2, wherein the display driver integrated circuit is further configured to receive a first luminance signal, wherein the first luminance signal is indicative of a first luminance less than a set luminance; Outputting a first data voltage to the first sub-pixel according to the 0 gray scale information includes outputting the first data voltage to the first sub-pixel according to the 0 gray scale information and the first luminance signal.
  4. 4. A display driver integrated circuit as claimed in any one of claims 1 to 3, wherein the first sub-pixel is a blue sub-pixel and the second sub-pixel is a red sub-pixel or a green sub-pixel.
  5. 5. The display drive integrated circuit according to any one of claims 1 to 4, wherein the display panel includes a plurality of light emitting devices; the display driving integrated circuit is further used for outputting an anode reset voltage to the anode of at least one light emitting device and outputting a cathode power supply voltage to the cathode of the at least one light emitting device; The anode reset voltage and the cathode power supply voltage have a first voltage difference Deltav, 0.2v0< Deltav < v0, and v0 is the starting voltage of any one of the plurality of light emitting devices.
  6. 6. The display driver integrated circuit of claim 5, wherein v0 is an on voltage of a light emitting device having a smallest on voltage among the plurality of light emitting devices.
  7. 7. The display driver integrated circuit of claim 5 or 6, wherein the display driver integrated circuit is further configured to: And receiving a power-on signal and a fourth image signal, and outputting the anode reset voltage and the cathode power supply voltage to the light emitting device before outputting the first target data voltage to the first sub-pixel.
  8. 8. The display driver integrated circuit of any of claims 1-7, wherein the display driver integrated circuit is further configured to: Receiving a power-on signal and a fifth image signal, and outputting a pre-charge data voltage to the first sub-pixel before outputting a second target data voltage to the first sub-pixel; the pre-charge data voltage is equal to the second data voltage, or the pre-charge data voltage is between the second data voltage and the first data voltage.
  9. 9. The display driver integrated circuit of any of claims 1-8, wherein the display driver integrated circuit is further configured to Receiving a power-off signal, and outputting a transition data voltage to the first sub-pixel before outputting a power-off data voltage to the first sub-pixel; The transition data voltage is equal to the power-off data voltage, or the transition data voltage is between the power-off data voltage and the first data voltage.
  10. 10. A display drive integrated circuit for driving a display panel, the display panel comprising sub-pixels, the sub-pixels comprising light emitting devices; The display driving integrated circuit is used for: Outputting an anode reset voltage to an anode of the light emitting device and outputting a cathode power supply voltage to a cathode of the light emitting device; the anode reset voltage and the cathode power supply voltage have a first voltage difference Deltav, deltav >0.2v0, and v0 is the turn-on voltage of the light emitting device.
  11. 11. The display driver integrated circuit of claim 10, wherein the display driver integrated circuit is further configured to: And receiving a power-on signal and a fourth image signal, and outputting the anode reset voltage and the cathode power supply voltage to the light emitting device before outputting the first target data voltage to the sub-pixel.
  12. 12. The display driving integrated circuit is used for driving a display panel, wherein the display panel comprises a first sub-pixel and a second sub-pixel which are used for emitting different colors of light; the display driving integrated circuit is used for receiving a first image signal, wherein the first image signal comprises 1 gray scale information corresponding to the second sub-pixel, and outputting a second data voltage to the second sub-pixel according to the 1 gray scale information; Receiving a power-on signal and a fifth image signal, and outputting a pre-charge data voltage to the first sub-pixel before outputting a second target data voltage to the first sub-pixel; the pre-charge data voltage is equal to the second data voltage, or the pre-charge data voltage is between the second data voltage and the first data voltage.
  13. 13. The display driver integrated circuit of claim 12, wherein the first image signal further comprises 0 gray scale information corresponding to the first subpixel; The display driving integrated circuit is further configured to: Outputting a first data voltage to the first sub-pixel according to the 0 gray scale information; receiving a power-off signal, and outputting a transition data voltage to the first sub-pixel before outputting a power-off data voltage to the first sub-pixel; The transition data voltage is equal to the power-off data voltage, or the transition data voltage is between the power-off data voltage and the first data voltage.
  14. 14. A driving controller, wherein the driving controller is used for controlling a display driving integrated circuit to drive a first sub-pixel in a display panel; The drive controller is further configured to: Receiving a power-on instruction and image data, wherein the image data comprises information of a third gray scale corresponding to the first sub-pixel; Outputting a sixth image signal to the display driving integrated circuit, the sixth image signal including fourth gray scale information corresponding to the first subpixel; Outputting a seventh image signal to the display driving integrated circuit, wherein the seventh image signal comprises third gray scale information corresponding to the first sub-pixel; The fourth gray scale information characterizes a fourth gray scale, the third gray scale information characterizes the third gray scale, and the fourth gray scale is smaller than the third gray scale.
  15. 15. A display panel, the display panel comprising: An array substrate; The first electrode layer, the first luminescent layer, the first charge generation layer, the second luminescent layer and the second electrode layer are sequentially arranged on the array substrate, wherein the first luminescent layer comprises a first primary color luminescent layer, a second primary color luminescent layer and a third primary color luminescent layer; at least one of the first primary color light emitting layer, the second primary color light emitting layer and the third primary color light emitting layer is a multi-layer structure including different material layers; And/or the number of the groups of groups, The display panel further comprises a hole injection layer, wherein the hole injection layer is arranged between the first electrode layer and the first light-emitting layer, metals are doped in the hole injection layer and the second charge generation layer respectively, and the ratio of the doping concentration of the second charge generation layer to the doping concentration of the hole injection layer is less than 2; And/or the number of the groups of groups, The display panel further comprises a pixel defining layer, wherein the pixel defining layer comprises an organic defining layer and an inorganic defining layer, the organic defining layer surrounds the periphery of the first primary color light emitting layer, the inorganic defining layer comprises a plurality of defining strips which are distributed on the periphery of the second primary color light emitting layer, at least part of the defining strips are located between the second primary color light emitting layer and the third primary color light emitting layer, the first charge generating layer and the second charge generating layer respectively cover the organic defining layer and are disconnected at positions above the inorganic defining layer.
  16. 16. The display module is characterized by comprising a display driving integrated circuit and a display panel, wherein the display driving integrated circuit is coupled with the display panel; the display driver integrated circuit being a display driver integrated circuit as claimed in any one of claims 1 to 13; And/or the number of the groups of groups, The display panel is the display panel of claim 15.
  17. 17. An electronic device, comprising a drive controller and a display module, wherein the drive controller and the display module are coupled; The display module set is the display module set according to claim 16; And/or the number of the groups of groups, The drive controller is the drive controller according to claim 14.
  18. 18. A driving method of an electronic device, characterized in that the electronic device comprises a driving controller, a display panel and a display driving integrated circuit, the display panel comprises a first sub-pixel and a second sub-pixel for emitting different colors of light; the driving method includes: The driving controller transmits a first image signal to the display driving integrated circuit, wherein the first image signal comprises 0 gray scale information corresponding to the first sub-pixel and 1 gray scale information corresponding to the second sub-pixel; The display driving integrated circuit outputs a first data voltage to the first sub-pixel according to the 0 gray scale information and outputs a second data voltage to the second sub-pixel according to the 1 gray scale information; the display panel drives the first sub-pixel and the second sub-pixel to emit light in response to the first data voltage and the second data voltage; the driving transistors included in the first sub-pixel and the second sub-pixel are P-type transistors, and the first data voltage is smaller than the second data voltage; Or the driving transistors included in the first sub-pixel and the second sub-pixel are N-type transistors, and the first data voltage is larger than the second data voltage.
  19. 19. The driving method according to claim 18, characterized in that the driving method further comprises: The driving controller sends a second image signal and a third image signal to the display driving integrated circuit, wherein the second image signal comprises first gray scale information corresponding to the first sub-pixel, and the third image signal comprises second gray scale information corresponding to the first sub-pixel, the first gray scale information represents a first gray scale, and the second gray scale information represents a second gray scale, and the first gray scale is larger than 0 gray scale and smaller than the second gray scale; The display driving integrated circuit outputs a third data voltage to the first sub-pixel according to the first gray scale information, and outputs a fourth data voltage to the first sub-pixel according to the second gray scale information; the display panel drives the first sub-pixel to emit light in response to the third data voltage or the fourth data voltage.
  20. 20. The driving method according to claim 18 or 19, further comprising the driving controller sending a first luminance signal to the display driving integrated circuit, wherein the first luminance signal characterizes a first luminance less than a set luminance; The display driving integrated circuit outputs the first data voltage to the first sub-pixel according to the 0 gray scale information and the first brightness signal.

Description

Display driving integrated circuit, driving controller, display panel, display module, electronic device and driving method thereof Technical Field The present application relates to the field of electronic technologies, and in particular, to a display driving integrated circuit, a driving controller, a display panel, a display module, an electronic device, and a driving method thereof. Background With the development of display panel technology, the display panel gradually evolves to a higher brightness direction. Taking an Organic LIGHT EMITTING Diode (OLED) display panel as an example, in order to achieve higher brightness, the structure of the OLED display panel is gradually developed from a single light emitting layer structure to a multiple light emitting layer structure. Under the same light-emitting power consumption condition, the OLED display panel with the multiple light-emitting layer structure can achieve higher brightness. Under the same brightness, the OLED display panel with the multi-light-emitting layer structure can effectively reduce light-emitting power consumption. However, the display effect of the current OLED display panel with multiple light emitting layers is still to be further improved. Disclosure of Invention The application provides a display driving integrated circuit, a driving controller, a display panel, a display module, electronic equipment and a driving method thereof, which are used for improving the display effect. In a first aspect of an embodiment of the present application, a display driving integrated circuit is provided, and the display driving integrated circuit is used for driving a display panel. The display panel includes a first subpixel and a second subpixel for emitting different colors of light. For example, the first subpixel and the second subpixel respectively include a stacked light emitting device. The first sub-pixel and the second sub-pixel may belong to the same pixel, and the first sub-pixel and the second sub-pixel may also belong to different pixels. The display driving integrated circuit is used for receiving a first image signal, wherein the first image signal comprises 0 gray scale information corresponding to a first sub-pixel and 1 gray scale information corresponding to a second sub-pixel, for example, the 0 gray scale information represents 0 gray scale and the 1 gray scale information represents 1 gray scale. And outputting a first data voltage to the first sub-pixel according to the 0 gray scale information, and outputting a second data voltage to the second sub-pixel according to the 1 gray scale information, wherein the first data voltage and the second data voltage are different. For example, the first sub-pixel and the second sub-pixel include driving transistors of P-type, and the first data voltage is smaller than the second data voltage. Or, for example, the first sub-pixel and the second sub-pixel include driving transistors of N-type, and the first data voltage is greater than the second data voltage. In the display driving integrated circuit provided by the embodiment of the application, the first data voltage received by the first sub-pixel based on 0 gray scale information is unequal to the second data voltage received by the second sub-pixel based on 1 gray scale information. The first sub-pixel and the second sub-pixel comprise driving transistors which are P-type transistors, and the first data voltage is smaller than the second data voltage. The first sub-pixel and the second sub-pixel comprise driving transistors which are N-type transistors, and the first data voltage is larger than the second data voltage. The first data voltage received by the first sub-pixel is compensated and lifted, so that the difference between the current potential and the target potential of the light emitting device in the first sub-pixel can be reduced when the first sub-pixel is switched from 0 gray scale to non-0 gray scale, and the problems of smear and explosion flash are solved. For example, the first data voltage received by the first sub-pixel is compensated and raised, the driving current received by the light emitting device in the first sub-pixel is increased, and the lowest potential of the first charge generating layer and the second charge generating layer in the light emitting device is raised. After the gray level is switched to the non-0 gray level, even if the potential changes of the first charge generation layer and the second charge generation layer lag, the minimum potential of the first charge generation layer and the second charge generation layer is relatively raised, so that the compensation requirement of the first charge generation layer and the second charge generation layer from the current potential to the target potential is reduced when the picture is switched. The gap from the current potential to the target potential can be reduced, so that the problems of smear and explosion flash are improved. In one poss