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Image display device

An image display device, image technology, applied in the direction of identification device, projection device, image communication, etc.

Inactive Publication Date: 2004-03-24
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The image formed by the traditional liquid crystal display panel must be viewed at a certain distance from the screen, which requires sufficient viewing space for the screen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0077] Picture 11 The image display device according to the first preferred embodiment of the present invention utilizes Picture 10 Schematic diagram of the optical system of division and displacement shown.

[0078] The flat display panel of the present invention may be a flat panel type panel using a line-type pixel arrangement, as well as PDP, FED, DMD and other panels.

[0079] Refer to Picture 11 The optical system includes a liquid crystal display panel 40 for displaying images formed by pixels; polarizers 41a and 41b for polarizing light with image information displayed on the liquid crystal display panel 40; and a birefringent plate 42. Form an optical system that divides and shifts the light passing through the polarizer 41a; a projection lens 43 is used to amplify and project the divided and shifted light; and a screen 44 is used to form an image on the screen.

[0080] The polarization axis of the polarizer 41a is inclined at a position of 45° with respect to the cr...

no. 2 example

[0104] Figure 16 It is a schematic diagram of the optical system in the projection image device according to the second preferred embodiment of the present invention, in which a triangular color filter pattern liquid crystal display panel is used.

[0105] See Figure 16 The optical system includes a liquid crystal display panel 50 for displaying images formed by pixels; polarizers 51a and 51b for polarizing light with image information displayed on the liquid crystal display panel 50; a pair of birefringent plates 52a and 52b constitute an optical system for dividing and shifting the light passing through the polarizer 51a; a projection lens 53 for magnifying and projecting the divided and shifted light; and a screen 54 for forming a projection lens 53 Enlarged image.

[0106] The polarizer 51a is installed on the light emitting side of the liquid crystal display panel 50, and its polarization axis is as Figure 17 Shows a 45° tilt, or as Picture 20 The optical axis of the cry...

no. 3 example

[0125] Figure 21 It is a schematic diagram of the optical system in the projection type image display device of the third preferred embodiment of the present invention. Among them, three birefringent plates 62a, 62b, and 62c are used to increase the number of pixels eight times. See Figure 21 , The designed optical system, except for the three birefringent plates 62a, 62b and 62c, has the same structure as Figure 16 The structure shown.

[0126] see Figure 22 In the third embodiment shown, the light emitted from the liquid crystal display panel 60 follows x 0 Axis travel (horizontal direction). The light passing through the liquid crystal display panel 60 is opposed to x by the polarizer 61a arranged on the light exit side of the liquid crystal display panel 60. 1 The axis propagates in a 45° oblique direction. Polarizer 61a is relative to x 1 The shaft is positioned at an inclination angle of 45°.

[0127] Five axis x 0 To x 4 Are the same horizontal x-axis, namely x 0 = X 1...

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Abstract

An image display device includes a light source, a flat display panel for forming an image in units of picture elements by using an incident light generated from the light source, and at least one double refraction plate for dividing the picture elements of the image formed and shifting them to other positions independent of the original picture elements. The double refraction plate uses an amplitude division method to divide and shift the picture elements to a distance of 3 / 2 Px(Px is pitch between adjacent picture elements as displayed). An arrangement of two double refraction plates in sequence and an arrangement of three double refraction plates in sequence may be used to increase the picture elements four and eight times in number, respectively.

Description

Technical field [0001] The present invention relates to an image display device, in particular to a projection type image display device, which is designed to improve image quality by using image differentiation and displacement methods. Background technique [0002] Generally, a flat panel, especially a projection type image display device with a liquid crystal display panel, can be realized by using real image and virtual image technology. [0003] Real image technology is a kind of use figure 1 The optical system shown is the method of real image display. The optical system includes a liquid crystal display panel 11, an eyepiece lens 12 and a display screen 13. The liquid crystal display panel 11 is located outside the focal length f of the eyepiece lens 12 to display the real image projected on the display screen 13. [0004] Virtual image technology is a method of displaying virtual images on the display screen. figure 2 It is a schematic diagram of the optical device of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/31
CPCH04N9/3197H04N9/3188
Inventor 朴泰守
Owner LG ELECTRONICS INC