KR950019827A - LCD panel and projection display device using same - Google Patents

Abstract

The present invention relates to a projection display device for mainly projecting an image displayed on a small liquid crystal display panel onto a screen, wherein the liquid crystal display panel has high luminance, good safety and no change over time, and a projection display device using the same as a light valve. It is an object to provide a structure, in the configuration, on the large electrode 11, the opposing electrode 13 and the dielectric multilayer thin film 16 is formed on the electrode (13). On the other hand, a TFT, a pixel electrode 15, and the like as a switching element are formed on the double substrate 12. Between the substrates, a polymer dispersed liquid crystal layer 17 composed of an ultraviolet curable resin and a liquid crystal dispersed in the resin is held. There is a light shielding film 18 on the TFT 14. The dielectric multilayer thin film 16 is formed by stacking SiO ₂ and HfO ₂ thin films in multiple layers. The thin film 16 transmits ultraviolet rays and, during manufacture, may cure the ultraviolet curable resin under the dielectric multilayer thin film 16. The liquid crystal display panel reflects light modulated and can be used as a light shielding film (block matrix) for the light.

Description

Liquid crystal display panel and projection display device using the same.

Since this is an open matter, no full text was included.

1 is a cross-sectional view of a liquid crystal display panel according to an embodiment of the present invention;

2 is an explanatory diagram of a liquid crystal display panel according to an embodiment of the present invention;

7 is a block diagram of a liquid crystal projection display device according to an embodiment of the present invention.

Claims (20)

A liquid crystal is sandwiched between a first substrate having pixels arranged in a matrix and a second substrate on which opposing electrodes are formed, and a dielectric is formed on the first substrate or the second substrate and corresponding to the pixel arrangement. A multilayer thin film is formed, and the dielectric multilayer thin film is formed by alternately stacking a low refractive index dielectric thin film having a refractive index of 1.7 or less and a high refractive index dielectric thin film having a refractive index of 1.8 or more, and at least, light having a specific exaggeration in the ultraviolet region. A liquid crystal display panel which transmits and reflects light having a specific wavelength in the visible light region. The material of claim 1, wherein the material of the low refractive index thin film is silicon dioxide (SiO ₂₎ or magnesium fluoride (MgF ₂ ), and the material of the high refractive index thin film is hafnium oxide (HfO ₂ ) or zirconium oxide (Zro ₂ ). LCD panel. The liquid crystal display panel according to claim 1, wherein a switching element is disposed in each pixel, and a light shielding film is formed on the switching element. A pixel electrode disposed in a matrix, a switching element for inputting a signal to the pixel electrode, a first substrate having a signal line for transmitting a signal to the switching element, an opposing electrode having light transmission, and the pixel electrode position A second substrate having a pattern formed of a dielectric multilayer thin film corresponding to the second substrate; and a polymer dispersion liquid crystal held between the counter electrode and the pixel electrode, wherein the pattern is positioned on at least one of the signal line and the switching element. A liquid crystal display panel, characterized in that formed. A polymer held between the counter electrode and the pixel electrode; a first substrate having a reflective electrode arranged in a matrix shape, a first substrate having a dielectric multilayer thin film formed between the reflective electrodes, a second substrate having a light transmissive counter electrode formed thereon; Liquid crystal display panel comprising a dispersion liquid crystal A first substrate having a pixel electrode arranged in a matrix shape, a switching element for inputting a signal to the pixel electrode, a signal line for transmitting a signal to the switching element, and a second substrate having an opposing electrode having light transmission; And a polymer dispersion liquid crystal held between the counter electrode and the pixel electrode, wherein a pattern made of a dielectric multilayer thin film is formed on the first substrate and between adjacent pixel electrodes. A first pixel including a pixel electrode arranged in a matrix, a switching element for inputting a signal to the pixel electrode, a signal line for transmitting a signal to the switching element, and a light shielding pattern formed on the pixel electrode adjacent to the signal line A second substrate having a pattern formed of a substrate, a counter electrode having light transparency, a dielectric multilayer thin film corresponding to the pixel electrode position, and a polymer dispersion liquid crystal held between the counter electrode and the pixel electrode; And the dielectric multilayer thin film is formed on the second substrate and at a position facing at least one of the signal line and the switching element. A first substrate having a display area that is a set of pixel electrodes arranged in a matrix shape, a second substrate having a counter electrode formed thereon, and a polymer dispersion liquid crystal held between the pixel electrode and the counter electrode; A liquid crystal display panel, wherein a pattern made of a dielectric multilayer thin film is formed on a substrate or on a second substrate and further in a region outside the display region. The dielectric multilayer thin film according to claim 4 or 5 or 6 or 7 or 8, wherein a low refractive index dielectric thin film having a refractive index of 1.7 or less and a high refractive index dielectric thin film having a refractive index of 1.8 or more are alternately stacked. A liquid crystal display panel characterized in that the configuration. The liquid crystal display panel according to claim 4, 7, or 8, wherein the dielectric multilayer thin film transmits light of a specific wavelength in at least the ultraviolet region and reflects light of a specific wavelength in the possible light region. The liquid crystal display panel according to claim 9, wherein the low refractive index dielectric thin film is formed of silicon dioxide (SiO ₂ ) or magnesium fluoride (MgF ₂ ). The liquid crystal display panel according to claim 9, wherein the high refractive index dielectric thin film is formed of hafnium oxide (HfO ₂ ) or zirconium oxide (Zro ₂ ). The liquid crystal display panel according to claim 4 or 5 or 6 or 7, wherein a light shielding film is formed on the switching element. The liquid crystal display panel according to claim 4, 5, 6 or 7, further comprising 8, wherein the polymer dispersed liquid crystal is composed of an ultraviolet curable resin and an antistatic liquid crystal. The liquid crystal display panel according to claim 4 or 7, wherein the dielectric multilayer thin film is formed on the counter electrode. The dielectric multilayer thin film of claim 4, 5, 6 or 7, further comprising a dielectric film having a low refractive index dielectric film of approximately λ / 4 (λ is a design wavelength of light). A liquid crystal display panel comprising a refractive index dielectric thin film formed alternately. The method according to claim 4, 5, 6, or 7, wherein the average particle diameter of the water droplet-shaped liquid crystal of the polymer acid liquid crystal or the average pore diameter of the polymer network is 0.5 µm or more and 3 µm or less. LCD panel. The light generating means, the liquid crystal display panel according to claim 1 or 4 or 5 or 6 or 7 or 8, and the light emitted by the sun light generating means And optical means for guiding the light to the liquid crystal display panel, and light projection means for projecting light from the liquid crystal display panel. Claims 1 or 4, wherein the light generating means for emitting white light, the color separation means for separating the white light emitted by the light generating means into three optical paths of red light, green light and blue light, and the three optical paths Or projection means for overlapping and projecting the light modulated by the three liquid crystal display panels at the same position in the liquid crystal display panel according to claim 5 or 6 or 7 or 8. Projection type display device. 20. The projection display device according to claim 19, wherein the dielectric multilayer thin film of each liquid crystal display panel reflects light incident on each liquid crystal panel. ※ Note: The disclosure is based on the initial application.