Display Device Circuit Board Fixation Stability
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Solution Overview
Problem
Existing display devices with independent control circuit boards for overlay displays are unstable in fixation, prone to shaking, and may fall off, affecting the display effect.
Innovation Solution
A display device design featuring a stacked arrangement of a display screen and a dimming screen with a backlight module and a circuit board module, where the first control circuit board is fixed on the backlight module using a support frame and cushion blocks, and the second control circuit board is fixed on the first support frame, enhancing fixation strength and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If independent control circuit boards are used for overlay display, then control functionality is achieved, but fixation stability deteriorates causing shaking and falling
Solution Approach 1:
The patent merges the first control circuit board and second control circuit board into a single integrated circuit board module. The first control circuit board is fixed on the backlight module, while the second control circuit board is fixed on the first control circuit board, creating a unified assembly that is collectively secured with screws. This merging approach transforms two separate, unstable components into one stable integrated unit, eliminating the shaking and falling issues while maintaining all control functionalities.
Solution Approach 2:
The patent implements a stacked hierarchical arrangement where the second control circuit board is positioned on top of the first control circuit board in the vertical dimension. This dimensional stacking allows both circuit boards to be mounted within a compact space while being collectively fixed to the backlight module, improving fixation stability without increasing the horizontal footprint of the device.
2Adaptability or versatility
If multiple control circuit boards are stacked, then control functionality is enhanced, but fixation strength decreases leading to abnormal noises
Solution Approach 1:
The patent combines multiple control circuit boards into a single fixed assembly where both the first and second control circuit boards are secured to the backlight module using screws. This merging of fixation methods ensures that the stacked configuration maintains strong attachment, preventing abnormal noises while preserving the enhanced control functionality provided by multiple circuit boards.
Solution Approach 2:
The patent applies preliminary fixation actions by pre-positioning the first control circuit board on the backlight module and then mounting the second control circuit board on top of it. This sequential preliminary arrangement ensures that both circuit boards are properly aligned and secured before final assembly, preventing instability and abnormal noises during operation.
3Ease of manufacture
If control circuit boards are loosely fixed, then assembly is simple, but stability deteriorates causing shaking and falling
Solution Approach 1:
The patent merges the fixation of multiple control circuit boards into a single unified fixing process. By securing both the first and second control circuit boards to the backlight module using screws in a combined assembly operation, the patent achieves reliable fixation stability while maintaining assembly simplicity. The integrated nature of the circuit board module allows for straightforward installation without requiring complex separate fixation procedures for each board.
Data Source
AI summary
A display device is disclosed, which includes a display screen and a dimming screen which are arranged in a stacked manner, a backlight module on a side of the dimming screen away from the display screen, and a circuit board module on a side of the backlight module away from the dimming screen. The circuit board module includes a first control circuit board on the side of the backlight module away from the dimming screen and a second control circuit board on a side of the first control circuit board away from the backlight module, the first control circuit board is electrically connected with the dimming screen through a first Chip On Film and the second control circuit board is electrically connected with the display screen through a second Chip On Film. The circuit board module further includes a first support frame and a second support frame.