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Calibration device, display chip and display

A technology for calibrating devices and comparators, which is applied in the field of circuits and can solve problems such as complex pixel structures

Active Publication Date: 2022-01-11
BRIGATES MICROELECTRONICS KUNSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The problem solved by the present invention is: the pixel structure of the existing pixel-level calibration method is particularly complicated

Method used

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  • Calibration device, display chip and display
  • Calibration device, display chip and display
  • Calibration device, display chip and display

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Embodiment Construction

[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] Such as figure 2 As shown, the embodiment of the present invention provides a calibration device suitable for coupling with at least one pixel unit 11 . The pixel unit 11 is adapted to receive the selection signal WR and the reference write voltage Vw1, and provide an initial output voltage Vout1 based on the reference write voltage Vw1 when the selection signal WR is at an active level.

[0030] The calibration device includes: an analog-to-digital conversion unit 12 . The analog-to-digital conversion unit 12 can obtain a first voltage difference between the reference voltage Vref and the initial output voltage Vout1, and perform analog-to-digital conversion on the first voltage difference to obtain a difference quantization valu...

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PUM

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Abstract

The invention provides a calibration device, a display chip and a display, the calibration device is suitable for being coupled with at least one pixel unit, and the pixel unit is suitable for receiving a selection signal and a reference write-in voltage and providing an initial output voltage based on the reference write-in voltage when the selection signal is an effective level. The calibration device comprises an analog-to-digital conversion unit which is suitable for obtaining a first voltage difference value between a reference voltage and an initial output voltage and performing analog-to-digital conversion on the first voltage difference value to obtain a difference value quantized value, and the difference value quantized value corresponds to a pixel unit providing the initial output voltage.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a calibration device, a display chip and a display. Background technique [0002] Silicon-based organic light-emitting display (OLED on silicon) is different from traditional organic light-emitting diode (Organic Light-Emitting Diode, OLED) display, which is a display designed based on a silicon wafer (chip). Its pixel size is much smaller than traditional OLED, and its main application fields are VR, AR and other fields. [0003] In the field of micro OLED (OLED on Silicon), maintaining the consistency of the response of each pixel unit is a key technical indicator. Good consistency will improve the display effect of the display. There are mandatory indicator requirements. [0004] figure 1 It is a traditional AM-OLED 2T1C (2 transistors and 1 capacitor) driving circuit structure, which is used to drive the light-emitting diode D1 in the pixel unit. The structure includes a switch tu...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 罗文哲张琦
Owner BRIGATES MICROELECTRONICS KUNSHAN
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