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US 10,769,981 B2Granted
Electro-optical module, power supply substrate, wiring substrate, and electronic apparatus
Assignee138 East Lcd Advancements Limited
InventorTadashi Yamada
Life of this patent
Estimating the term…
Abstract
This invention provides an electro-optical module with reduced noise in driving voltage. The invention can include a power supply substrate that is arranged separately from the flexible substrate having a driver, so that the noise of the driving voltage supplied from the power supply substrate is reduced.
Claims46
An electro-optical display panel device comprising:
- a liquid crystal display panel, comprising a main side which emits light, the main side comprising an upper substrate, the liquid crystal display panel further comprising a rear side opposing the main side, the rear side comprising a base substrate which protrudes beyond the upper substrate at one side of a plurality of sides forming a periphery of the liquid crystal display panel,
- a flexible wiring substrate connected to the base substrate where the base substrate protrudes, the flexible wiring substrate extending outward from the base substrate at a point of connection between the flexible wiring substrate and the base substrate,
- a driver integrated circuit formed on the flexible wiring substrate, a bend of approximately 180 degrees being formed in the flexible wiring substrate back towards the liquid crystal display panel such that the driver integrated circuit and a portion of the flexible wiring substrate on which the driver integrated circuit is formed extend over the rear side of the liquid crystal display panel and overlap the rear side of the liquid crystal display panel, the driver integrated circuit and the portion of the flexible wiring substrate being approximately parallel to the rear side of the liquid crystal display panel,
- there being a metal frame between the liquid crystal display panel and the portion of the flexible wiring substrate on which the driver integrated circuit is formed,
- further comprising a power supply substrate electrically connected to the flexible wiring substrate, the power supply substrate also being approximately parallel to the rear side of the liquid crystal display panel and not overlapping with the driver integrated circuit, the metal frame also being between the liquid crystal display panel and the power supply substrate, the power supply substrate comprising a plurality of conductive layers, each pair of conductive layers separated by an insulating layer in at least some regions, the driver integrated circuit generating a driving signal supplied through a first wiring in the flexible wiring substrate to the liquid crystal display panel, and the power supply substrate generating a power supply voltage to the driver integrated circuit through a second wiring in the flexible wiring substrate.
2 more elements
An electro-optical display panel device comprising:
- a liquid crystal display panel, comprising a main side which emits light, the main side comprising an upper substrate, the liquid crystal display panel further comprising a rear side opposing the main side, the rear side comprising a base substrate which protrudes beyond the upper substrate at one side of a plurality of sides forming a periphery of the liquid crystal display panel,
- a first bent flexible wiring substrate portion connected to the base substrate where the base substrate protrudes, and a second bent flexible wiring substrate portion connected to the base substrate where the base substrate protrudes,
- further comprising a first driver integrated circuit formed on the first bent flexible wiring substrate portion and a second driver integrated circuit formed on either the first or the second bent flexible wiring substrate portion, such that a bend of the first bent flexible wiring substrate portion is at least approximately 90 degrees, and a bend of the second bent flexible wiring substrate portion is also at least approximately 90 degrees,
- further comprising a power supply substrate electrically connected to the first and second bent flexible wiring substrate portions, the power supply substrate not overlapping with either the first or second driver integrated circuit,
- a metal frame being between the liquid crystal display panel and both the first and second driver integrated circuits, the metal frame also being between the liquid crystal display panel and the power supply substrate,
- the power supply substrate comprising a plurality of metal layers, each pair of metal layers separated by an insulating layer in at least some regions,
- the first driver integrated circuit generating a driving signal supplied through a first wiring to the liquid crystal display panel, and
- the power supply substrate generating a power supply voltage to the first driver integrated circuit through a second wiring.
5 more elements
Dependencies are inferred from the claim text.