Shared Data Driver Output Circuit for Multi-Panel Display Interfaces
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Solution Overview
Problem
Existing display devices face challenges in reducing costs while maintaining high performance, particularly in the use of data drivers which are not optimized for common usage across different types of display panels.
Innovation Solution
The display device incorporates a data driver with multiple output parts, including buffers, holders, and input/output pads, connected by various switches to facilitate common usage and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate data drivers are used for different display panel types, then performance can be optimized for each specific type, but manufacturing cost increases due to multiple components
Solution Approach 1:
The data driver is designed with a unified structure that can handle both sensing signals and data signals through the same output pads. The driver includes multiple output parts (first output part with data pad, second output part with sensing pad, third output part with input/output pad) that can be configured through switch control to serve different functions, eliminating the need for separate dedicated data drivers for different display panel types.
2Reliability
If multiple dedicated output parts are used for different signal types, then signal integrity is improved, but device complexity increases
Solution Approach 1:
The data driver employs dynamic switch control to reconfigure the function of output pads based on the required signal type. Switches (including first data switch, first sensing switch, first voltage switch, and second voltage switch) control the connection states between different output parts and pads, allowing the same physical structure to adaptively serve different functions without requiring separate dedicated paths for each signal type.
3Measurement precision
If separate sensing and data output parts are used, then sensing accuracy is improved, but the number of components increases
Solution Approach 1:
The data driver merges the sensing output part and data output part into a single integrated structure. The third output part with input/output pads can function as both sensing and data output depending on switch configuration. The first sensing switch, first voltage switch, and second voltage switch enable the same pads to be used for sensing operations without requiring completely separate dedicated sensing output circuits.
Data Source
AI summary
The present disclosure relates to a display device, and to display device in which output parts of a data driver may be used commonly. According to the present disclosure, a display device may comprise a display panel including a plurality of pads, and a data driver including a plurality of pads, wherein the data driver includes a first output part including a buffer, a holder, and a first input or output pad, and a first data switch is disposed between the buffer and the first input/output pad. According to the present disclosure, it is possible to reduce the cost commonly using the data driver of the display device.