Surface-emitting device, front light, and liquid crystal device
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0622863
(2000-08-23)
|
우선권정보 |
JP-0037581 (1998-12-28) |
국제출원번호 |
PCT/JP99/07019
(1999-12-14)
|
§371/§102 date |
20000823
(20000823)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Seiko Epson Corporation JP
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
4 |
초록
▼
There is provided a surface-emitting device, such as a front light, in which visibility is not deteriorated even when a point light source, such as a light-emitting diode, is used.A surface-emitting device 20 forming a front light includes point light sources 21, such as light-emitting diodes, a tra
There is provided a surface-emitting device, such as a front light, in which visibility is not deteriorated even when a point light source, such as a light-emitting diode, is used.A surface-emitting device 20 forming a front light includes point light sources 21, such as light-emitting diodes, a transmissive light guide plate 22 made of acrylic resin, polycarbonate resin, or the like by injection molding or by other methods, a transmissive light-scattering plate 23 bonded onto an end face 22d of the light guide plate 22 opposite from the side of an end face 22c where the point light sources 21 are placed, and a reflection plate 24 bonded onto the surface of the light-scattering plate 23.
대표청구항
▼
1. A surface-emitting device, comprising:a transmissive light guide plate that emits from its surface light propagating therein in a first direction along its plate plane, the front surface of said light guide plate comprising a convex portion or a concave portion having an inclined face that emits
1. A surface-emitting device, comprising:a transmissive light guide plate that emits from its surface light propagating therein in a first direction along its plate plane, the front surface of said light guide plate comprising a convex portion or a concave portion having an inclined face that emits light from the front surface; a light source placed adjacent to a first end of said light guide plate that introduces light into said light guide plate in a second direction different from the first direction; and a reflecting layer, disposed at a second end of said light guide plate different from the first end where said light source is placed, that reflects light which propagates inside said light guide plate in the second direction in nearly the first direction, inside said light guide plate, said convex portion or said concave portion of said front surface of said light guide plate comprising a gently inclined face formed to face the second direction, as viewed from the inside of said light guide plate, and inclined at a small angle to the rear face of said light guide plate, and a steeply inclined face formed to face the first direction, as viewed from the inside of said light guide plate, and inclined at a large angle to the rear face of said light guide plate.
이 특허에 인용된 특허 (4)
-
Ciupke Werner W. (Sonoma County CA) Redmond William F. (Sonoma County CA) DuNah Richard E. (Sonoma County CA), Flat panel display lighting system.
-
Miyazaki Kiyomi,JPX, Lighting device, liquid crystal display device and electronic equipment.
-
Hatazawa Tsuyonobu,JPX ; Hayashi Hideki,JPX ; Nakamura Kozo,JPX ; Watanabe Takashi,JPX ; Mamiya Johji,JPX ; Suzuki Masaru,JPX ; Tanase Hiroshi,JPX, Planar light source device having polarization separator formed of two sheets with mating triangular prisms and different indices of refraction.
-
Suzuki Shingo,JPX, Transparent and spread illuminating apparatus.
이 특허를 인용한 특허 (2)
-
Kano,Mitsuru; Miyata,Hiroyasu; Yamashita,Tatsumaro; Ohizumi,Mitsuo, Illuminating device, light guide body and liquid crystal display device.
-
Lu, Fei, Lightguides having angled light extracting surfaces and specific optical absorption coefficient.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.