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Pixel circuits for AMOLED displays

A pixel circuit and display technology, applied to static indicators, instruments, etc., can solve the problem of reducing pixel pitch

Active Publication Date: 2016-01-06
IGNIS INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of additional transistors and / or wiring may undesirably reduce pixel pitch (ie, pixel density)

Method used

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  • Pixel circuits for AMOLED displays
  • Pixel circuits for AMOLED displays
  • Pixel circuits for AMOLED displays

Examples

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Embodiment Construction

[0065] figure 1 is a diagram of an exemplary display system 50 . The display system 50 includes an address driver 8 , a data driver 4 , a controller 2 , a memory 6 and a display panel 20 . The display panel 20 includes an array of pixels 10 arranged in rows and columns. Each pixel 10 can be individually programmed to emit light with an individually programmable brightness value. The controller 2 receives digital data indicating information to be displayed on the display panel 20 . The controller 2 sends signals 32 to the data driver 4 and dispatch signals 34 to the address driver 8 to drive the pixels 10 in the display panel 20 to display the indicated information. Thus, the plurality of pixels 10 associated with the display panel 20 comprises a display array (display screen) adapted to dynamically display information according to input digital data received by the controller 2 . The display screen may display video information, eg according to the stream of video data rec...

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Abstract

A system for controlling a display, wherein each pixel circuit comprises a light emitting device, a driving transistor, a storage capacitor, a reference voltage source and a programming voltage source. The storage capacitor stores voltage, and the stored voltage is equal to a difference value between the reference voltage and the programming voltage, and a controller provides a programming voltage as a calibrated voltage for a known target current, the controller reads the actual current flowing through the driver transistor to a monitoring line, the calibrated voltage is modified to let the current provided by the driver transistor to be equal to the target current, and light emitting device is closed at the same time, and the current corresponding to a modified calibrated voltage is determined based on the predetermined current-voltage characteristics of the driver transistor.

Description

[0001] Cross References to Related Applications [0002] This application contains subject matter related to the disclosure of prior US Patent Application Serial No. 14 / 298,333 filed with the US Patent Office on August 6, 2014, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention generally relates to circuits for use in displays and methods for driving, calibrating and programming displays, in particular displays such as active matrix organic light emitting diode displays. Background technique [0004] Displays may consist of arrays of light emitting devices each controlled by individual circuits (ie, pixel circuits) with transistors for selectively controlling the circuits so that they are programmed with display information and emit light in accordance with the display information. Thin-film transistors (TFTs) fabricated on a substrate can be incorporated into such displays. As displays age, TFTs tend to exhibit non-uni...

Claims

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Application Information

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IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G2300/0842G09G2300/0861G09G2310/0251G09G2320/0233G09G2320/0295G09G2320/043G09G2320/045G09G2330/10G09G3/3266G09G3/3291G09G2300/0819G09G2320/0693G09G2320/10G09G2330/08
Inventor 戈尔拉玛瑞扎·恰吉
Owner IGNIS INNOVATION
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