AMOLED Pixel Circuit Integrating Touch Control via Shared Transistors
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Solution Overview
Problem
Existing AMOLED display panels face challenges in integrating in-cell touch control circuits with AMOLED driving circuits due to limited space, as adding necessary TFTs for touch sensors and driving circuits occupies extra space in pixel units, hindering simultaneous manufacturing.
Innovation Solution
An AMOLED pixel circuit design that integrates a light-emitting module, touch control module, control module, and driving and amplifying module, where the control and driving modules are shared between light-emitting and touch control functions, allowing for time division driving without increasing signal numbers, enabling simultaneous integration of in-cell touch control and AMOLED driving circuits in limited pixel unit space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensors and driving circuit for touch control are incorporated into AMOLED pixel, then touch control function is achieved, but pixel unit space is occupied and manufacturing complexity increases
Solution Approach 1:
The patent merges the touch control circuit and AMOLED driving circuit into a single integrated pixel unit circuit. The driving circuit includes transistors that serve dual purposes: driving the OLED light-emitting element and processing touch control signals from sensors, thereby achieving both display and touch control functions within the same pixel space without requiring separate dedicated circuits
Solution Approach 2:
The driving circuit transistors are designed to perform multiple functions. The same transistors that control OLED operation (such as the switching transistor and driving transistor) also process touch control signals. This multi-functionality allows the circuit to handle both display driving and touch sensing operations using the same hardware components, maximizing space utilization
2Adaptability or versatility
If sensors and driving circuit for touch control are incorporated into AMOLED pixel, then touch control function is achieved, but manufacturing difficulty increases due to simultaneous manufacturing requirements
Solution Approach 1:
The patent combines the touch control circuit and AMOLED driving circuit into a single integrated circuit structure that can be manufactured simultaneously in one process. The circuit shares common transistors and signal lines, allowing both touch sensor integration and OLED driving functionality to be achieved through a unified manufacturing approach rather than separate sequential processes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the integration of in-cell touch control circuits with AMOLED driving circuits, improving display product quality and reducing manufacturing difficulties by allowing both to be manufactured simultaneously in the limited space of the pixel unit.
Implementation Method 1
a light-emitting element having one terminal connected to a first electrode of the first transistor and the other terminal connected to the first voltage terminal
Data Source
AI summary
The present disclosure relates to a field of display technology, and provides an AMOLED pixel circuit, a method for driving the same, and a display device, which can improve an integration of an in-cell touch control circuit with an AMOLED driving circuit. The AMOLED pixel circuit comprises a light-emitting module, a touch control module, a control module, and a driving and amplifying module. The MOLED pixel circuit provided in embodiments of the present disclosure can be used in the manufacture of the AMOLED display device.