US5546206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concealing a bright defect using light blocking means to block only the wavelength band shed onto the defective pixel
Assignee: Sharp Corp
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Filing: 1995-08-24
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Granted: 1996-08-13
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Expires: 2015-08-24
Abstract
Abstract A method of concealing a bright defect in a transmission display device which displays by selectively transmitting plural beams different wavelength bands shed onto corresponding pixels of a transmission display element through a microlens according to a voltage applied to each pixel is arranged such that only a beam of a wavelength area shed onto a defective luminance point pixel is selectively blocked. On the other hand, the beam shed onto normal pixels surrounding the defective pixel, wherein a bright defect is not generated would be transmitted through the liquid crystal display panel without being blocked. Therefore, the method enables only the defective luminance point pixel to be concealed without affecting the normal pixels, thereby improving a display quality of the transmission display device.
Inventors
- 👤 Hiroshi Nakanishi
- 👤 Hiroshi Hamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:11
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/1306; G02F1/1309; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133526; G02F2201/00; G02F2201/50; G02F2201/506; G02F2201/508
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
71 words
A method of concealing a bright defect of a defective luminance point pixel in a transmission display device which displays by selectively transmitting plural beams of different wavelength bands, each band being shed onto corresponding pixels of a transmission display element through microlenses, according to a voltage applied to each pixel, comprising the step of: selectively blocking only a beam of a wavelength band shed onto the defective luminance point pixel.
Claim 2
Independent Claim
71 words
A method of concealing a bright defect of a defective luminance point pixel in a transmission display device which displays by selectively transmitting plural beams of different wavelength bands, each band being shed onto corresponding pixels of a transmission display element through microlenses, according to a voltage applied to each pixel, comprising the step of: selectively blocking only a beam of a wavelength band shed onto the defective luminance point pixel.
Claim 3
Dependent Claim
39 words
The method of concealing a bright defect as set forth in claim 1, wherein a beam is blocked by an ultraviolet-curing resin including a material which selectively absorbs a beam of at least one wavelength band to be blocked.
Claim 4
Dependent Claim
19 words
The method of concealing a bright defect as set forth in claim 2, wherein said material includes a dye.
Claim 5
Dependent Claim
19 words
The method of concealing a bright defect as set forth in claim 2, wherein said material includes a pigment.
Claim 6
Dependent Claim
106 words
A transmission display element, comprising: a pair of transparent substrates for sealing a light-transmitting material whose transmittance varies in response to an applied voltage; pixel electrodes for applying a voltage to said light-transmitting material, said pixel electrodes being arranged in a matrix form on one of said transparent substrates; microlenses for directing plural beams of different wavelength bands toward the pixel electrodes, such that each microlens receives and directs beams of plural wavelength bands, and each pixel electrode receives beams of a single wavelength band; and light-blocking means for selectively blocking only a beam of a wavelength band shed onto a defective luminance point pixel electrode.
Claim 7
Dependent Claim
106 words
A transmission display element, comprising: a pair of transparent substrates for sealing a light-transmitting material whose transmittance varies in response to an applied voltage; pixel electrodes for applying a voltage to said light-transmitting material, said pixel electrodes being arranged in a matrix form on one of said transparent substrates; microlenses for directing plural beams of different wavelength bands toward the pixel electrodes, such that each microlens receives and directs beams of plural wavelength bands, and each pixel electrode receives beams of a single wavelength band; and light-blocking means for selectively blocking only a beam of a wavelength band shed onto a defective luminance point pixel electrode.
Claim 8
Dependent Claim
37 words
The transmission display element as set forth in claim 5, wherein said light-blocking means is made of an ultraviolet-curing resin including a material which selectively absorbs a beam of at least one wavelength band to be blocked.
Claim 9
Dependent Claim
16 words
The transmission display element as set forth in claim 6, wherein: said material includes a dye.
Claim 10
Dependent Claim
16 words
The transmission display element as set forth in claim 6, wherein: said material includes a pigment.
Claim 11
Dependent Claim
107 words
The transmission display element as set forth in claim 5, wherein: a transparent electrode for applying a voltage to the light transmitting material together with said pixel electrodes is formed on an incident side substrate of said pair of transparent substrates, through which light comes into said light transmitting material; said pixel electrodes and switching elements for switching a signal voltage to be applied to each pixel electrode are formed on a light coming-out side substrate of said pair of transparent substrates, through which light comes out of the transmission display element; and said microlenses are formed on a light incident side of the incident side substrate.
Claim 12
Dependent Claim
36 words
The transmission display element as set forth in claim 9, wherein: said light-blocking means is formed between said microlens placed on an optical path of the beam to be blocked and the light incident side substrate.
Claim 13
Dependent Claim
32 words
The transmission display element as set forth in claim 9, wherein: said light-blocking means is formed on an optical path of the beam to be blocked on the light coming-out side substrate.
Claim 14
Dependent Claim
30 words
The transmission display element as set forth in claim 11, wherein: said light-blocking means is formed on a surface on the light coming-out side of the light coming-out side substrate.
Claim 15
Dependent Claim
19 words
The transmission display element as set forth in claim 9, wherein: said switching element is a thin film transistor.
Claim 16
Dependent Claim
17 words
The transmission display element as set forth in claim 9, wherein: said switching element is a Metal-Insulator-Metal.
Claim 17
Dependent Claim
140 words
A transmission color liquid crystal display device, comprising: a transmission display element for modulating an intensity of light incident thereon; and light emitting means for emitting light to said transparent display element, wherein said transmission display element includes: a pair of transparent substrates for sealing a light/transmitting material whose optical transmittance varies in response to an applied voltage; pixel electrodes for applying a voltage to said transmitting material, said pixel electrodes being arranged in a matrix form on one of said transparent substrates; microlenses for directing plural beams of different wavelength bands toward the pixel electrodes, such that each microlens receives and directs beams of plural wavelength bands, and each pixel electrode receives beams of a single wavelength band; and light-blocking means for selectively blocking only a beam of a wavelength band shed onto a defective luminance point pixel electrode.
Claim 18
Dependent Claim
140 words
A transmission color liquid crystal display device, comprising: a transmission display element for modulating an intensity of light incident thereon; and light emitting means for emitting light to said transparent display element, wherein said transmission display element includes: a pair of transparent substrates for sealing a light/transmitting material whose optical transmittance varies in response to an applied voltage; pixel electrodes for applying a voltage to said transmitting material, said pixel electrodes being arranged in a matrix form on one of said transparent substrates; microlenses for directing plural beams of different wavelength bands toward the pixel electrodes, such that each microlens receives and directs beams of plural wavelength bands, and each pixel electrode receives beams of a single wavelength band; and light-blocking means for selectively blocking only a beam of a wavelength band shed onto a defective luminance point pixel electrode.
Claim 19
Dependent Claim
67 words
The transparent color liquid crystal display device as set forth in claim 15, wherein said light emitting means includes: a white light source for emitting white light; a reflective mirror for reflecting the white light emitted from said white light source; and plural dichroic mirrors for reflecting therefrom a beam of a predetermined wavelength band of reflected light from said reflective mirror to said transmitting display element.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-13 | 2000-02-12 | 2000-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-13 | 2004-02-12 | 2004-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-13 | 2008-02-12 | 2008-08-13 | $7700.00 | Window Closed / Lapsed |