KR20040033210A - Lcd display apparatus utilizing suspended particle device(spd) in mobile phone - Google Patents
Lcd display apparatus utilizing suspended particle device(spd) in mobile phone Download PDFInfo
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- KR20040033210A KR20040033210A KR1020020062149A KR20020062149A KR20040033210A KR 20040033210 A KR20040033210 A KR 20040033210A KR 1020020062149 A KR1020020062149 A KR 1020020062149A KR 20020062149 A KR20020062149 A KR 20020062149A KR 20040033210 A KR20040033210 A KR 20040033210A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
- G02F1/133557—Half-mirrors
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- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
Description
본 발명은 휴대용 단말기의 LCD 윈도우를 필요시 소형거울로 사용할 수 있는 거울기능 겸용의 이동통신 단말기의 LCD 디스플레이장치에 관한 것으로, 상세하게는 전압조절에 따라 광투과도가 가변됨으로써 윈도우 역할외에 거울기능을 동시에 수행하는 광투과도 가변윈도우를 포함하는 LCD 디스플레이장치에 관한 것이다.The present invention relates to an LCD display device of a mobile communication terminal having a mirror function that can be used as a small mirror when the LCD window of the portable terminal is required. In detail, the light transmittance is changed according to the voltage control to provide a mirror function in addition to the window role. The present invention relates to an LCD display device including a variable window which transmits light simultaneously.
종래 거울기능 겸용의 LCD 디스플레이를 갖는 휴대폰으로는 실용신안등록출원된 "거울기능을 갖는 휴대폰"(출원번호:20-2000-0003455)이 있었다.Conventionally, a mobile phone having a mirror function combined LCD display has a utility model registered application "mobile phone having a mirror function" (application number: 20-2000-0003455).
도1을 참조하여 상기 "거울기능을 갖는 휴대폰"을 설명하면, 상기 "거울기능을 갖는 휴대폰"은 본체(50)의 정면 일측에 장방형의 윈도우(45)가 형성되고, 상기 윈도우(45)의 후방으로 액정 디스플레이패널(20)이 결합된 휴대폰에 있어서, 상기 윈도우(45) 내측으로 수지재로 이루어진 사각판체 형상의 하프 미러(10)를 결합시키는 것을 특징으로 한다.Referring to FIG. 1, the "mobile phone having a mirror function" will be described. The "mobile phone having a mirror function" has a rectangular window 45 formed at one side of the front surface of the main body 50, and In the mobile phone to which the liquid crystal display panel 20 is coupled to the rear, the half mirror 10 having a rectangular plate shape made of a resin material is coupled to the window 45.
도2a를 참조하면, 내부의 LCD 램프가 소등된 상태에서는 휴대폰 내부는 어둡고 외부는 밝기 때문에 그 차이로 인하여 하프 미러(10)가 빛을 반사하여 거울과 동일한 기능을 하게 된다.Referring to FIG. 2A, when the inside of the LCD lamp is turned off, the inside of the mobile phone is dark and the outside is bright, and thus the half mirror 10 reflects light and functions as a mirror due to the difference.
도2b를 참조하면, 전화가 걸려오거나 휴대폰을 사용하기 위하여 내부의 LCD램프를점등된 상태에서는 빛이 하프 미러(10)를 통과함으로써 외부에서 LCD 화면을 볼 수 있게 된다.Referring to FIG. 2B, when the LCD lamp inside is turned on to make a call or use a mobile phone, light passes through the half mirror 10 so that the LCD screen can be viewed from the outside.
그러나, 종래의 "거울기능을 갖는 휴대폰"은 수지재로 이루어진 사각판체 형상의 하프 미러(10)를 사용함으로써, 내부의 LCD 램프에 비하여 외부가 비교적 밝으면 하프 미러(10)로 빛이 통과하지 못하고 반사하기 때문에 내부의 LCD 램프를 점등하더라도 LCD 화면의 내용이 보이지 않으므로 하프 미러(10)를 휴대폰 LCD 윈도우에 장착하여 사용하는데 어려움이 있다.However, the conventional "mobile phone having a mirror function" uses a half-mirror 10 having a rectangular plate body made of a resin material, so that light does not pass to the half mirror 10 when the outside is relatively bright compared to the LCD lamp inside. Since the contents of the LCD screen are not visible even though the LCD lamp is turned on, the half mirror 10 is difficult to mount and use in the mobile phone LCD window.
본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여, 외부환경에 관계없이 전압을 인가함에 따라 광투과도가 가변됨으로써 거울기능을 수행하는 광투과도 가변유리로 된 광투과도 가변윈도우를 포함하는 가변유리를 이용한 거울기능 겸용의 이동통신 단말기의 LCD 디스플레이를 제공하고자 한다.The present invention to solve the problems of the prior art, the variable glass including a light transmittance variable window made of a light transmittance variable glass that performs a mirror function by varying the light transmittance according to the application of a voltage regardless of the external environment To provide an LCD display of a mobile communication terminal using a mirror function.
또한, 본 발명은 상기 광투과도 가변윈도우는 전압조절에 의해 광투과도를 조절하기 위하여 2장의 유리사이에 크기가 1백만분의 3mm인 광기능성 입자가 포함된 필름이 삽입되어 있는 광투과도 가변유리인 것을 특징으로 하는 가변유리를 이용한 거울기능 겸용의 이동통신 단말기의 LCD 디스플레이장치를 제공하고자 한다.In addition, the present invention is the light transmittance variable window is a light transmittance variable glass in which a film containing optical functional particles having a size of 1 million 3mm is inserted between two glasses in order to adjust the light transmittance by voltage control. An object of the present invention is to provide an LCD display device of a mobile communication terminal having a mirror function using a variable glass.
도1은 종래의 발명에 따른 거울기능을 갖는 휴대폰의 개략적 구성도.1 is a schematic configuration diagram of a mobile phone having a mirror function according to the related art.
도2a는 종래의 발명에 따른 거울기능을 갖는 휴대폰에 있어서 램프소등시의 개략적 상태도.Figure 2a is a schematic state diagram when the lamp is turned off in the mobile phone having a mirror function according to the conventional invention.
도2b는 종래의 발명에 따른 거울기능을 갖는 휴대폰에 있어서 램프점등시의 개략적 상태도.Figure 2b is a schematic state diagram at the time of lamp lighting in the mobile phone having a mirror function according to the conventional invention.
도3은 본 발명에 따른 일실시예의 사시도.Figure 3 is a perspective view of one embodiment according to the present invention.
도4는 본 발명에 따른 일실시예에 있어서 가변유리의 개략적 구성도.Figure 4 is a schematic configuration diagram of a variable glass in one embodiment according to the present invention.
도5a는 본 발명에 따른 일실시예에 있어서 전압 인가시의 LCD 디스플레이장치의 요부단면도.Fig. 5A is a cross-sectional view of main parts of an LCD display device when voltage is applied in one embodiment according to the present invention;
도5b는 본 발명에 따른 일실시예에 있어서 전압 제거시의 LCD 디스플레이장치의 요부단면도.Fig. 5B is a cross-sectional view of the main portion of the LCD display at the time of voltage removal in one embodiment according to the present invention;
* 도면의 주요부분에 대한 부호 설명 *Explanation of symbols on the main parts of the drawings
110: LCD 모듈110: LCD module
120: 광투과도 가변윈도우 122: 투명전도성 필름120: light transmittance variable window 122: transparent conductive film
124: 고분자 수지 126: 광기능성 입자124: polymer resin 126: photofunctional particles
130: 전압인가장치130: voltage application device
140: LCD 디스플레이 버튼140: LCD display button
본 발명은 이동통신 단말기의 LCD 디스플레이에 있어서, LCD모듈 전방에 설치되며 전압조절에 따라 광투과도가 가변됨으로써 거울기능을 수행하는 광투과도 가변유리로 된 광투과도 가변윈도우와, 상기 광투과도 가변유리에 전압을 인가하는 전압인가장치를 포함하는 것을 특징으로 하는 거울기능 겸용의 이동통신 단말기의 LCD 디스플레이장치에 관한 것이다.The present invention provides an LCD display of a mobile communication terminal, which is installed in front of the LCD module and has a light transmittance variable window made of a light transmittance variable glass, which performs a mirror function by varying light transmittance according to voltage control, and on the light transmittance variable glass. An LCD display device of a mobile communication terminal having a mirror function, comprising a voltage applying device for applying a voltage.
또한, 본 발명은 상기 광투과도 가변유리는 전압조절에 의해 광투과도를 조절하기 위하여 2장의 유리사이에 크기가 1백만분의 3mm인 광기능성 입자가 포함된 필름이 삽입되어 있는 광투과도 가변유리인 것을 특징으로 하는 거울기능 겸용의 이동통신 단말기의 LCD 디스플레이장치에 관한 것이기도 하다.In addition, the present invention is a light transmittance variable glass is a light transmittance variable glass in which a film containing optical functional particles having a size of 1 million 3mm is inserted between two glasses in order to adjust the light transmittance by voltage control The present invention also relates to an LCD display device of a mobile communication terminal having a mirror function.
또한, 본 발명은 상기 전압인가장치에는 인가되는 전압크기를 조절하는 전압조절장치가 추가로 연결되는 것을 특징으로 하는 가변유리를 이용한 거울기능 겸용의 이동통신 단말기의 LCD 디스플레이장치에 관한 것이기도 하다.In addition, the present invention also relates to an LCD display device of a mobile communication terminal having a mirror function using a variable glass, characterized in that the voltage adjusting device for adjusting the voltage applied to the voltage applying device is further connected.
이하, 도면을 참조하여 본 발명에 따른 일실시예를 상세히 설명한다. 도3은 본 발명에 따른 일실시예의 사시도를, 도4는 본 발명에 따른 일실시예에 있어서 가변유리의 개략적 구성도를, 도5a는 본 발명에 따른 일실시예에 있어서 전압 인가시의 LCD 디스플레이의 요부단면도를, 도5b는 본 발명에 따른 일실시예에 있어서 전압 제거시의 LCD 디스플레이의 요부단면도를 나타낸다.Hereinafter, an embodiment according to the present invention will be described in detail with reference to the drawings. Figure 3 is a perspective view of one embodiment according to the present invention, Figure 4 is a schematic configuration diagram of a variable glass in one embodiment according to the present invention, Figure 5a is an LCD at the time of voltage application in one embodiment according to the present invention Fig. 5B shows a sectional view of the main portion of the display, and Fig. 5B shows a sectional view of the main portion of the LCD display at the time of voltage removal in one embodiment according to the present invention.
도3을 참조하면, 본 발명에 따른 일실시예는 LCD모듈(110) 전방에 설치되는 광투과도 가변윈도우(120)를 갖는다. 광투과도 가변윈도우(120)는 광투과도 가변유리(suspended particle device:SPD)로 이루어진다.Referring to Figure 3, one embodiment according to the present invention has a light transmittance variable window 120 is installed in front of the LCD module (110). The light transmittance variable window 120 is composed of a light transmittance variable glass (SPD).
도4를 참조하면 광투과도 가변유리는 2장의 유리(121)사이에 투명전도성 필름(122)이 설치되고, 투명전도성 필름(122) 사이에는 미세액적(125)이 배치되고, 미세액적(125)내에는 광기능성입자(126)가 배치된다. 미세액적(125)의 고정수단으로는 통상 고분자 수지(124)가 사용된다. 한편, 광기능성입자(126)의 입자의 크기는 1백만분의 3mm인 것이 바람직하다. 광투과도 가변유리는 전압이 인가되지 않은 상태에서는 광기능성입자(126)가 불규칙적으로 브라운운동을 하기 때문에 광기능성입자(126)에 입사되는 광이 산란 또는 흡수되어 투과율이 낮지만, 투명전도성 필름(122) 사이에 3W 정도의 전기를 통하면 광기능성입자(126)가 전계방향으로 배열되어 투과율이 평소의 5~25%에서 35~70%로 올라가므로 입사되는 광이 거의 그대로 통과되기 때문에 광투과도 가변유리가 투명한 상태로 전환된다.Referring to FIG. 4, in the light transmittance variable glass, a transparent conductive film 122 is installed between two glasses 121, microdroplets 125 are disposed between the transparent conductive films 122, and microdroplets ( The photofunctional particles 126 are disposed in 125. As the fixing means for the microdroplets 125, a polymer resin 124 is usually used. On the other hand, the size of the particles of the optical functional particles 126 is preferably 3mm per million. In the light transmittance variable glass, the light functional particles 126 irregularly move in a brown state when no voltage is applied, so that light incident on the light functional particles 126 is scattered or absorbed to have a low transmittance, but a transparent conductive film ( 122) When 3W of electricity is applied, the light functional particles 126 are arranged in the electric field direction, and the transmittance increases from 5 to 25% to 35 to 70%. The variable glass is converted to a transparent state.
도4를 참조하면, 본 발명에 따른 일실시예는 전압인가장치(130)를 갖는다. 전압인가장치(130)는 휴대폰 본체에 설치되는 LCD 디스플레이 버튼(140)이 작동되거나 통화중인 경우 투명전도성 필름(122) 사이에 전압을 인가함으로써 도5a와 같이 가변유리를 투명하게 만든다.4, an embodiment according to the present invention has a voltage applying device 130. The voltage applying device 130 makes the variable glass transparent as shown in FIG. 5A by applying a voltage between the transparent conductive films 122 when the LCD display button 140 installed in the mobile phone main body is operated or is in a call.
한편, 광투과도 가변유리로 된 광투과도 가변윈도우(120)는 빛이 입사되는 유리표면에 반사면을 형성하는 표면처리를 함으로써 광투과도가 변함에 따라 반사율을 높일 수 있도록 하는 것이 바람직하다.On the other hand, the light transmittance variable window 120 is made of a light transmittance variable glass is preferably to increase the reflectance as the light transmittance is changed by the surface treatment to form a reflective surface on the glass surface to which light is incident.
이하, 상기한 일실시예의 작동에 대하여 설명한다.Hereinafter, the operation of the above-described embodiment will be described.
도5a에 도시된 바와 같이 통화중이거나 LCD 디스플레이 버튼(140)이 작동하면 전압인가장치(130)에 의해 투명전도성 필름(122) 사이에 전압이 인가됨으로써 광기능성입자(126)가 전계방향으로 배열되어 투과율이 평소의 5~25%에서 35~70%로 올라가므로 가변유리가 투명하게 되어 LCD내부 화면이 보이게 된다.As shown in FIG. 5A, when the LCD display button 140 is in operation or when the LCD display button 140 is operated, a voltage is applied between the transparent conductive film 122 by the voltage applying device 130 so that the optical functional particles 126 are arranged in the electric field direction. As transmittance increases from 5 to 25% to 35 to 70%, the variable glass becomes transparent and the LCD inner screen is visible.
휴대폰을 사용하지 않을 때는 전압인가장치(130)에 의해 투명전도성 필름(122) 사이에 영전압이 인가됨으로써, 도5b에 도시된 바와 같이 가변유리가 불투명하게 되어 내부로 빛이 통과하지 못하고 반사하게 되어 거울기능을 수행하게 된다. 가변유리로 된 가변윈도우(120)는 유리표면이 표면처리된 경우 그렇지 않은 경우에 비하여 반사율을 높임으로써 거울기능을 보다 효율적으로 수행할 수 있게 된다.When the mobile phone is not used, zero voltage is applied between the transparent conductive films 122 by the voltage applying device 130, so that the variable glass is opaque as shown in FIG. The mirror function is performed. The variable window 120 made of variable glass can perform the mirror function more efficiently by increasing the reflectance than when the glass surface is surface treated.
상기 일실시예에 있어서 광투과도 가변윈도우는 유리표면이 표면처리 되는 것으로 하였으나, 다른 일실시예에 있어서 광투과도 가변윈도우의 유리표면은 표면처리 되지 않을 수도 있다.In one embodiment, the light transmittance variable window is supposed to be surface treated glass, but in another embodiment, the glass surface of the light transmittance variable window may not be surface treated.
상기 일실시예는 통화중이거나 LCD 디스플레이 버튼 작동시 가변유리로 된 광투과도 가변윈도우에 전압이 인가되는 것으로 하였으나, 다른 일실시예에는 LCD 디스플레이 버튼 작동시에만 전압이 인가되는 것으로 할 수도 있다.In the above embodiment, the voltage is applied to the light transmission variable window made of variable glass during a call or when the LCD display button is operated, but in another embodiment, the voltage may be applied only when the LCD display button is operated.
상기 일실시예는 인가되는 전압크기를 조절하는 전압조절장치를 가지지 않는 것으로 하였으나, 다른 실시예에 있어서 상기 전압인가장치에는 인가되는 전압크기를 조절하는 전압조절장치가 추가로 연결되는 것으로 할 수도 있다. 이 경우 LCD 디스플레이 버튼 근처에 전압조절장치를 작동시키는 전압조절 버튼을 설치하는 것이 바람직하다. 이때, 전압조절 버튼의 작동으로 전압을 높게 설정할수록 가변유리의 투과도가 더욱 높아지게 된다.The embodiment does not have a voltage adjusting device for adjusting the applied voltage, but in another embodiment, the voltage applying device may be additionally connected to the voltage applying device. . In this case, it is preferable to install a voltage regulating button for operating the voltage regulating device near the LCD display button. At this time, the higher the voltage is set by the operation of the voltage adjustment button, the higher the transmittance of the variable glass.
본 발명은 전압을 인가하여 광투과도가 가변됨으로써 거울기능을 수행하는 광투과도 가변유리로 이루어지는 광투과도 가변윈도우를 포함하는 거울기능 겸용의 이동통신 단말기의 LCD 디스플레이장치를 제공함으로써, 외부환경에 관계없이 LCD 디스플레이 버튼을 작동하여 전압인가장치에 의해 투명전도성 필름 사이에 전압을 인가함으로써 LCD내부 화면을 볼 수 있는 장점이 있다.The present invention provides an LCD display device of a mobile communication terminal having a mirror function including a light transmittance variable window made of a light transmittance variable glass that performs a mirror function by applying a voltage to vary the light transmittance, irrespective of an external environment. By operating the LCD display button to apply a voltage between the transparent conductive film by the voltage applying device has the advantage that you can see the LCD screen inside.
또한, 본 발명은 광투과도 가변윈도우에 인가되는 전압의 크기를 조절하는 전압조절장치를 갖춤으로써, 광투과도 가변윈도우의 광투과도를 조절할 수 있는 장점이 있기도 하다.In addition, the present invention has an advantage that the light transmittance of the variable light transmittance window can be adjusted by having a voltage adjusting device for adjusting the magnitude of the voltage applied to the light transmittance variable window.
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| KR10-2002-0062149A KR100475061B1 (en) | 2002-10-11 | 2002-10-11 | Lcd display apparatus utilizing suspended particle device(spd) in mobile phone |
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| KR100475061B1 KR100475061B1 (en) | 2005-03-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040104427A (en) * | 2003-06-03 | 2004-12-10 | 모토로라 인코포레이티드 | Switchable display/mirror method and apparatus |
| WO2007029215A3 (en) * | 2005-09-08 | 2007-07-05 | Spd Control Systems Corp | Intelligent spd control apparatus with scalable networking capabilities for window and multimedia applications |
| US8363301B2 (en) | 2010-06-16 | 2013-01-29 | Electronics And Telecommunications Research Institute | Transparent smart light source capable of adjusting illumination direction |
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| JPH09311343A (en) * | 1996-05-21 | 1997-12-02 | Seiko Precision Kk | Liquid crystal display device |
| JP2001285441A (en) * | 2000-04-03 | 2001-10-12 | Gs-Melcotec Co Ltd | Portable communications terminal |
| JP2001350157A (en) * | 2000-06-09 | 2001-12-21 | Sanyo Electric Co Ltd | Display device and portable terminal equipment |
| JP2002290521A (en) * | 2001-03-27 | 2002-10-04 | Toyo Commun Equip Co Ltd | Mobile terminal |
| KR100630198B1 (en) * | 2001-05-12 | 2006-09-29 | 삼성전자주식회사 | Apparatus and method for performing function of mirror in potable terminal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040104427A (en) * | 2003-06-03 | 2004-12-10 | 모토로라 인코포레이티드 | Switchable display/mirror method and apparatus |
| WO2007029215A3 (en) * | 2005-09-08 | 2007-07-05 | Spd Control Systems Corp | Intelligent spd control apparatus with scalable networking capabilities for window and multimedia applications |
| US7800812B2 (en) | 2005-09-08 | 2010-09-21 | SPD Control Systems Corp. | Intelligent SPD control apparatus with scalable networking capabilities for window and multimedia applications |
| US8098421B2 (en) | 2005-09-08 | 2012-01-17 | SPD Control Systems Corporation Center for Wireless & Info. Technology | Application independent operational controls of a suspended particle device |
| US8120839B2 (en) | 2005-09-08 | 2012-02-21 | Spd Control Systems Corporation | Suspended particle device electronic control processes |
| US8792154B2 (en) | 2005-09-08 | 2014-07-29 | Spd Control Systems Corporation | Electronic operations of a suspended particle device |
| US9261752B2 (en) | 2005-09-08 | 2016-02-16 | Spd Control Systems Corporation | Enhanced functionality of SPD electronic controllers |
| US9658509B2 (en) | 2005-09-08 | 2017-05-23 | Spd Control Systems Corporation | Multi-nodal SPD controller networking |
| US8363301B2 (en) | 2010-06-16 | 2013-01-29 | Electronics And Telecommunications Research Institute | Transparent smart light source capable of adjusting illumination direction |
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| KR100475061B1 (en) | 2005-03-10 |
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