CN-115662360-B - Display assembly, electrostatic protection circuit thereof, display screen and electronic equipment

Abstract

The invention discloses a display component, an electrostatic protection circuit thereof, a display screen and electronic equipment, wherein the circuit comprises a detection unit and a control unit, wherein the detection unit is configured to output a fault signal when detecting that a source driving chip which is invaded by electrostatic charges exists in the display component; and a timing controller configured to re-acquire the programmable gamma information upon receiving the fail signal and transmit the programmable gamma information to each source driving chip. According to the electrostatic protection circuit, when the display component is affected by electrostatic charge, the display component is quickly and automatically restored to normal display, so that the display of the display component is not affected by the electrostatic charge, the electrostatic charge is effectively protected, and the use experience of a user is ensured.

Inventors

• LAI ZHENGDE
• WANG ZHONGJIE

Assignees

• 京东方科技集团股份有限公司
• 成都京东方光电科技有限公司

Dates

Publication Date

20260512

Application Date

20221026

Claims (10)

1. 1. An electrostatic protection circuit for a display assembly, comprising: a detection unit configured to output a failure signal when detecting that there is a source driving chip that is infested by electrostatic charges in the display assembly; A timing controller configured to re-acquire programmable gamma information upon receipt of the fail signal and transmit the programmable gamma information to each of the source driving chips; the detection unit comprises a comparison sub-module, wherein the comparison sub-module is configured to compare gamma voltages output by any two source electrode driving chips in the display assembly so as to judge whether the source electrode driving chips which are disturbed by electrostatic charges exist in the display assembly; And each source electrode driving chip is internally provided with a programmable gamma circuit, and corresponding gamma voltages are generated through the programmable gamma circuits.
2. 2. The esd protection circuit of claim 1 wherein the comparison sub-module is further configured to compare gamma voltages output by two adjacent source driver chips in the display assembly to determine whether there are source driver chips in the display assembly that are corrupted by electrostatic charges.
3. 3. The electrostatic protection circuit according to claim 2, wherein the comparing submodule includes a plurality of comparators, positive and negative input terminals of each of the comparators are correspondingly connected to output terminals of two adjacent source driver chips in turn, and output terminals of the plurality of comparators are connected together as output terminals of the detecting unit.
4. 4. The electrostatic protection circuit according to claim 2, wherein the comparing submodule includes a plurality of comparators and an and gate, positive and negative input ends of each comparator are correspondingly connected with output ends of two adjacent source driving chips in turn, output ends of the plurality of comparators are correspondingly connected with a plurality of input ends of the and gate, and output ends of the and gate serve as output ends of the detecting unit.
5. 5. The electrostatic protection circuit of claim 1, wherein the comparison sub-module is further configured to determine that a source driver chip that is infringed by electrostatic charge is present in the display component when a voltage difference between gamma voltages output by any two of the source driver chips is greater than or equal to a preset voltage threshold.
6. 6. The electrostatic protection circuit of any one of claims 1-5, further comprising a memory, wherein the timing controller is coupled to the memory, the timing controller configured to retrieve programmable gamma information from the memory upon receipt of the fault signal.
7. 7. The electrostatic protection circuit of claim 1, wherein the timing controller is coupled to each of the source driver chips and sends the programmable gamma information to each of the source driver chips in a point-to-point manner.
8. 8. A display assembly comprising an electrostatic protection circuit according to any one of claims 1-7.
9. 9. A display screen comprising the display assembly of claim 8.
10. 10. An electronic device comprising a display screen according to claim 9.

Description

Display assembly, electrostatic protection circuit thereof, display screen and electronic equipment Technical Field The present invention relates to the field of display technologies, and in particular, to an electrostatic protection circuit for a display assembly, a display screen, and an electronic device. Background In the related art, a driving mode of "one timing controller+multiple source driving chips" is mostly adopted for the middle-size display panel. When the display panel is affected by electrostatic charge, the potential of a register related to a gamma circuit in the source electrode driving chip is easily disturbed and is misaligned, so that a split screen and even a region are highlighted, and the use experience of a user is seriously affected. Disclosure of Invention The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, a first object of the present invention is to provide an electrostatic protection circuit for a display assembly, which can quickly enable the display assembly to automatically resume normal display when the display assembly is affected by electrostatic charge, so that the display of the display assembly is not affected by static electricity, the electrostatic charge is effectively protected, and the use experience of a user is ensured. A second object of the present invention is to provide a display assembly. A third object of the present invention is to propose a display screen. A fourth object of the present invention is to propose an electronic device. In order to achieve the above object, an embodiment of the first aspect of the present invention provides an electrostatic protection circuit of a display device, which includes a detection unit configured to output a fault signal when detecting that a source driving chip is present in the display device, which is violated by electrostatic charges, and a timing controller configured to re-acquire programmable gamma information when receiving the fault signal, and to transmit the programmable gamma information to each source driving chip. According to the electrostatic protection circuit of the display component, the detection unit outputs the fault signal when detecting that the source electrode driving chips which are invaded by electrostatic charges exist in the display component, and the time sequence controller acquires the programmable gamma information again when receiving the fault signal and sends the programmable gamma information to each source electrode driving chip, so that the display component is enabled to resume normal display. Therefore, when the display component is affected by electrostatic charge, the circuit can quickly enable the display component to automatically recover to normal display, so that the display of the display component is not affected by the static electricity, the electrostatic charge can be effectively protected, and the use experience of a user is ensured. In addition, the electrostatic protection circuit of the display assembly according to the above embodiment of the present invention may further have the following additional technical features: According to an embodiment of the present invention, the detecting unit includes a comparing sub-module configured to compare gamma voltages output from any two source driving chips in the display device to determine whether there is a source driving chip in the display device that is affected by electrostatic charges. According to an embodiment of the present invention, the comparing sub-module is further configured to compare the gamma voltages output by two adjacent source driving chips in the display device to determine whether there is a source driving chip in the display device that is affected by the electrostatic charge. According to one embodiment of the invention, the comparing sub-module comprises a plurality of comparators, wherein the positive and negative input ends of each comparator are correspondingly connected with the output ends of two adjacent source driving chips in turn, and the output ends of the comparators are connected together and serve as the output ends of the detecting unit. According to another embodiment of the present invention, the comparing sub-module includes a plurality of comparators and an and gate, wherein positive and negative input ends of each comparator are correspondingly connected to output ends of two adjacent source driving chips in turn, output ends of the plurality of comparators are correspondingly connected to a plurality of input ends of the and gate, and output ends of the and gate serve as output ends of the detecting unit. According to an embodiment of the present invention, the comparing sub-module is further configured to determine that the source driving chip is affected by the electrostatic charge in the display component when a voltage difference between the gamma voltages output from any two source driving chips