Pixel driving circuit, resistance compensation method, and display panel

Abstract

A pixel driving circuit, a resistance compensation method, and a display panel are disclosed, in which the compensation circuit in the pixel driving circuit is configured to compensate for the resistance value from the data line to the control end of the driving switch so as to align the resistance value from the data line to the control end of the driving switch in different pixel rows, thereby achieving the effect that the efficiency when charging pixels in a pixel row at a far end using the same data line matches the efficiency when charging pixels in a pixel row at a near end.

Claims

1. Includes a switch circuit, a memory circuit, a connection circuit, and a compensation circuit, The switch circuit includes a drive IC and a drive switch, the control terminal of the drive switch is connected to the compensation circuit, the data line of the drive IC and the power supply voltage are connected to the input terminal of the drive switch, and the output terminal of the drive switch is connected to the connection circuit and the pixel. The connection circuit is connected to the compensation circuit, and the connection circuit is configured to transmit the data voltage to the storage circuit when the switch circuit transmits the data voltage output from the data line of the drive IC, and the storage circuit is configured to output the data voltage to the control terminal of the drive switch after receiving the data voltage, so that the drive switch drives the pixel to light up in accordance with the power supply voltage. The pixel driving circuit is characterized in that the compensation circuit is configured to compensate for the resistance from the data line of the driving IC to the control terminal of the driving switch, thereby equalizing the resistance value from the data line to the control terminal of the driving switch in different pixel rows.

2. The pixel driving circuit according to claim 1, wherein the pixel driving circuit includes a target connection node, the connection circuit is connected to the storage circuit via the target connection node, and the storage circuit is connected to the control terminal of the driving switch via the target connection node.

3. The pixel driving circuit is characterized in that the compensation circuit is installed between the connection circuit and the target connection node, as described in claim 2.

4. The pixel driving circuit according to claim 2, characterized in that the compensation circuit is installed between the target connection node and the memory circuit.

5. The pixel driving circuit according to claim 2, characterized in that the compensation circuit is installed between the target connection node and the control terminal of the driving switch.

6. The pixel driving circuit according to claim 2, characterized in that the compensation circuit includes a resistor.

7. The pixel driving circuit according to claim 2, characterized in that the resistor includes a variable resistor or a fixed resistor.

8. The pixel driving circuit according to claim 2, characterized in that the compensation circuit includes an extension line.

9. The pixel driving circuit according to claim 2, characterized in that a first thin-film transistor is installed in the connection circuit, the input terminal of the first thin-film transistor is connected to the output terminal of the drive switch, and the output terminal of the first thin-film transistor is connected to the target connection node.

10. The pixel driving circuit according to claim 2, characterized in that the drive switch is a thin-film transistor.

11. The pixel driving circuit according to claim 2, characterized in that a memory capacitor is installed in the memory circuit.

12. Obtain the resistance value from the data line to each pixel row, and determine the maximum resistance. Based on the aforementioned maximum resistance value and the resistance value of each pixel row, the compensation resistance corresponding to each pixel row is calculated, This includes, based on the compensation resistors corresponding to each pixel row, a compensation circuit being installed in the pixel driving circuit corresponding to a pixel in each pixel row, The pixel driving circuit includes a switch circuit, a memory circuit, a connection circuit, and a compensation circuit. The switch circuit includes a drive IC and a drive switch, the control terminal of the drive switch is connected to the compensation circuit, the data line of the drive IC and the power supply voltage are connected to the input terminal of the drive switch, and the output terminal of the drive switch is connected to the connection circuit and the pixel. The connection circuit is connected to the compensation circuit, and the connection circuit is configured to transmit the data voltage to the storage circuit when the switch circuit transmits the data voltage output from the data line of the drive IC, and the storage circuit is configured to output the data voltage to the control terminal of the drive switch after receiving the data voltage, so that the drive switch drives the pixel to light up in accordance with the power supply voltage. The compensation circuit is configured to compensate for the resistance from the data line of the drive IC to the control terminal of the drive switch, thereby equalizing the resistance values ​​from the data line to the control terminal of the drive switch in different pixel rows. A resistance compensation method characterized by the following features.

13. The pixel driving circuit includes a target connection node, the connection circuit is connected to the storage circuit via the target connection node, the storage circuit is connected to the control terminal of the driving switch via the target connection node, and a compensation circuit is provided in the pixel driving circuit corresponding to the pixels in each pixel row. The compensation circuit is installed between the connection circuit of the pixel driving circuit corresponding to each pixel and the target connection node, and / or The compensation circuit is installed between the target connection node of the pixel driving circuit corresponding to each pixel and the storage circuit, and / or The resistance compensation method according to claim 12, further comprising the provision that the compensation circuit is installed between the target connection node of the pixel driving circuit corresponding to each pixel and the control terminal of the driving switch.

14. It includes a plurality of pixel rows and a plurality of pixel columns, each of the pixel rows and the pixel columns consists of a plurality of pixels, and at least one of the pixels in the pixel row is driven by a pixel driving circuit to emit light, and the pixel driving circuit includes a switch circuit, a memory circuit, a connection circuit and a compensation circuit, The switch circuit includes a drive IC and a drive switch, the control terminal of the drive switch is connected to the compensation circuit, the data line of the drive IC and the power supply voltage are connected to the input terminal of the drive switch, and the output terminal of the drive switch is connected to the connection circuit and the pixel. The connection circuit is connected to the compensation circuit, and the connection circuit is configured to transmit the data voltage to the storage circuit when the switch circuit transmits the data voltage output from the data line of the drive IC, and the storage circuit is configured to output the data voltage to the control terminal of the drive switch after receiving the data voltage, so that the drive switch drives the pixel to light up in accordance with the power supply voltage. The display panel is characterized in that the compensation circuit is configured to compensate for the resistance from the data line of the drive IC to the control terminal of the drive switch, thereby equalizing the resistance values ​​from the data line to the control terminal of the drive switch in different pixel rows.

15. The aforementioned pixels include red pixels, green pixels, and blue pixels, or The aforementioned pixels include red pixels, green pixels, blue pixels, and yellow pixels, or The display panel according to claim 14, characterized in that the pixels include red pixels, green pixels, blue pixels, and white pixels.

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