Driver IC, mounting board, display unit, and projection display unit

A driver and mounting board technology, used in instruments, static indicators, etc., can solve the problems of complex wiring layout and increased wiring area occupancy rate, and achieve the effect of reducing area occupancy rate and simplifying wiring layout.

Inactive Publication Date: 2014-02-12
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to an increase in the area occupancy of the wiring in the surface of the wiring substrate
In particular, if these wirings are all formed in one layer on the wiring substrate, the wiring layout will inevitably become extremely complicated

Method used

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  • Driver IC, mounting board, display unit, and projection display unit
  • Driver IC, mounting board, display unit, and projection display unit
  • Driver IC, mounting board, display unit, and projection display unit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] 1. The first embodiment (display unit)

[0035] 2. Modified example of the first embodiment (display unit)

[0036] 3. The second embodiment (projection display unit)

[0037] 4. The third embodiment (projection display unit)

[0038] 1. The first implementation plan

[0039] [structure]

[0040] figure 1A schematic configuration of the display unit 1 of the first embodiment of the present invention is illustrated. The display unit 1 can be adapted as a light valve of a three-panel projector (projection display unit). For example, the display unit 1 may include liquid crystal display (LCD) panels 10R, 10G, and 10B and a driving circuit 20 . Note that, if the liquid crystal display panels 10R, 10G, and 10B are each of the transmissive type, the display unit 1 includes a light source (not shown) located on the back of each of the liquid crystal display panels 10R, 10G, and 10B.

[0041] Hereinafter, the term "liquid crystal display panel 10" is used as a general te...

Deformed example 1

[0085] Figure 11 The configuration of the display unit 1 corresponding to Modification 1 of the first embodiment is illustrated. The display unit 1 of Modification 1 is configured by modifying the display unit 1 of the first embodiment such that the display unit 1 further includes a temperature detection circuit 60 for detecting the temperature of the mounting board 20A. The temperature detection circuit 60 corresponds to a specific example of the "first detection circuit" of one embodiment of the present invention, but this example is not limitative.

[0086] In Modification 1, the mounting board 20A further includes the temperature detection circuit 60 on the wiring substrate 21 . In this configuration, for example, as Figure 12 As shown, the amplifying circuit 45 may be composed of a video signal amplifier 46 and an output control circuit 47, the video signal amplifier 46 drives the liquid crystal display panel 10, and the output control circuit 47 outputs the control s...

Deformed example 2

[0090] Figure 16 The configuration of the display unit 1 corresponding to Modification 2 of the first embodiment is illustrated. The display unit 1 of Modification 2 is constituted by modifying the display unit 1 of the first embodiment such that the display unit 1 further includes a detection mechanism for detecting the difference between the driver IC 30 and the liquid crystal display panel 10. electrical connection between them. For example, if Figure 16 As shown, such a detection mechanism may include an output control circuit 47, a wire 29 connected to an input terminal (not shown) of the output control circuit 47, and an upper wire connected to the wire 29 at a point close to the output control circuit 47. pull circuit 48.

[0091] The wiring 29 extends from the input terminal of the output control circuit 47 to the liquid crystal display panel 10 via the FPC 12 , and returns from the liquid crystal display panel 10 to the wiring board 21 via the FPC 12 . The wirin...

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PUM

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Abstract

A driver IC includes: a plurality of driver circuits that are individually provided for respective light modulation elements and drive the light modulation elements, in which the light modulation elements each perform light modulation on received light in response to an applied voltage; and a plurality of output terminals outputting signals derived from the respective driver circuits to outside. The driver IC is a single driver IC that drives the light modulation elements. The output terminals are disposed on sides of the driver IC, and the respective output terminals are disposed on the different sides for the respective corresponding driver circuits.

Description

technical field [0001] The present invention relates to a driver IC (integrated circuit) for driving a light modulation element, a mounting board including the driver IC, and a display unit and a projection display unit respectively including the mounting board. Background technique [0002] A color display projector has a liquid crystal panel as a light valve for each color light. For example, a projector using light of three primary colors of red, green, and blue has three liquid crystal panels as light valves (for example, refer to Japanese Unexamined Patent Application Publication No. 2003-057674). These liquid crystal panels described above are individually driven by a driver IC provided for each liquid crystal panel. [0003] If the driver ICs are provided individually for each liquid crystal panel, the area occupancy rate of the driver ICs in the surface of the wiring substrate increases in proportion to the number of driver ICs. In addition, if a plurality of drive...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/34G09G3/3611G09G3/3614G09G2310/0251
Inventor 丰泽升平川孝市坪太郎加藤英司
Owner SONY CORP
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