TWI703383B - Light guide plate, backlight module and display - Google Patents
Light guide plate, backlight module and display Download PDFInfo
- Publication number
- TWI703383B TWI703383B TW108138333A TW108138333A TWI703383B TW I703383 B TWI703383 B TW I703383B TW 108138333 A TW108138333 A TW 108138333A TW 108138333 A TW108138333 A TW 108138333A TW I703383 B TWI703383 B TW I703383B
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- guide plate
- incident surface
- total reflection
- light guide
- Prior art date
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
本發明係關於一種導光板,其具有一本體、多數個凹部及多數個分光槽,該本體的一側面係定義為一入光面,該本體的一頂面係定義為一出光面,該多數個凹部係凹設於本體的入光面上.該多數個分光槽係設置於本體的出光面上,並分別與凹部的位置相對應,各分光槽與入光面間形成有一間距,並於各分光槽靠近入光面的一側形成有一分光點及一由分光點朝兩側延伸、遠離入光面並具有可使由凹部進入的部分光源形成全反射效果的全反射面,而藉此構成一種可有效減少兩發光體間之光暗差,以縮小能量暗區的導光板。The present invention relates to a light guide plate, which has a body, a plurality of recesses, and a plurality of light splitting grooves. A side surface of the body is defined as a light incident surface, and a top surface of the body is defined as a light exit surface. A concave part is recessed on the light incident surface of the body. The plurality of light-splitting grooves are arranged on the light-emitting surface of the main body and correspond to the positions of the recesses respectively. A distance is formed between each light-splitting groove and the light-incident surface, and a light-splitting groove is formed on the side close to the light-incident surface of each light-splitting groove Point and a total reflection surface extending from the beam splitting point to both sides, away from the light incident surface, and having a total reflection effect for part of the light source entered by the recess, thereby forming a kind of light-darkness difference between the two luminous bodies , To reduce the energy dark area of the light guide plate.
Description
本發明係關於一種導光板,尤指一種可對部分光源提供全反射效果,以減少光源間的亮暗差的導光板。 The present invention relates to a light guide plate, in particular to a light guide plate that can provide a total reflection effect to part of the light sources to reduce the difference between brightness and darkness between the light sources.
請配合參看圖6,現有液晶顯示器的背光模組主要係以如發光二極體(LED)之發光體52作為光源,再利用一導光板50將發光體52所發出的光源均勻分佈於整個導光板50上,來提供顯示面板作為一背光模組,然而因現有光源的發光體52之間係呈間隔設置,因此於相鄰的兩發光體之間會形成一能量暗區,尤其是當發光體52所發出的光線在進入導光板50後,會因光線折射的現象,使光線的行進角度變小,因而加大了能量暗區,故現有的導光板50需作進一步改良,以減少能量暗區的發生。
Please refer to FIG. 6, the backlight module of the existing liquid crystal display mainly uses a
因此,本發明人有鑑於現有導光板能量暗區的問題,特經過不斷的試驗與研究,終於發展出一種可改進現有缺失之本發明。 Therefore, in view of the problem of the energy dark area of the existing light guide plate, the inventors have finally developed an invention that can improve the existing shortcomings after continuous experiments and research.
本發明的主要目的,在於提供一種導光板,其可減少能量暗區的發生,使光源的光能更均勻地分佈於整個顯示面,以達到提昇顯示器顯示效果之目的。 The main purpose of the present invention is to provide a light guide plate, which can reduce the occurrence of energy dark areas, so that the light energy of the light source is more evenly distributed on the entire display surface, so as to achieve the purpose of improving the display effect of the display.
為達上述目的,本發明提供一種導光板,其包含有:一本體,該本體的一側面係定義為一入光面,該本體的一頂面係定義為一出光面;多數個凹部,係凹設於該本體的該入光面上;以及 多數個分光槽,係設置於該本體的該出光面上,並分別與所述凹部的位置相對應,各分光槽與該入光面間形成有一間距,並於各分光槽靠近該入光面的一側形成有一分光點及一由該分光點朝兩側延伸、遠離該入光面並具有可使由所述凹部進入的部分光源形成全反射效果的全反射面;其中各分光槽遠離該入光面的一側係形成一中央遠離入光面的凹弧面,該凹弧面的相對兩端分別連接該全反射面的相對兩端。 To achieve the above object, the present invention provides a light guide plate, which includes: a body, a side surface of the body is defined as a light incident surface, a top surface of the body is defined as a light exit surface; Recessed on the light incident surface of the main body; and A plurality of light-splitting grooves are arranged on the light-emitting surface of the main body and respectively correspond to the positions of the recesses. A distance is formed between each light-splitting groove and the light-incident surface, and each light-splitting groove is close to the light-incident surface A light splitting point is formed on one side of the light splitting point and a total reflection surface extending from the light splitting point to both sides, away from the light incident surface, and having a total reflection effect for part of the light source entering from the concave portion; wherein each light splitting groove is far away from the One side of the light incident surface forms a concave arc surface whose center is far away from the light incident surface, and opposite ends of the concave arc surface are respectively connected to opposite ends of the total reflection surface.
藉由上述技術手段,本發明可利用各分光槽上的全反射面,使發光體所發出的光線由本體的入光面進入本體後,部份光線在抵達所相對分光槽的全反射面時,會因全反射原理而反射,加大光線的行進角度而更為偏離分光點以進入到兩發光體間的能量暗區,如此藉由這些反射的光線,便可有效地縮小兩發光體間的能量暗區,而使發光源所發出的光線能更均勻地散佈於整個本體上,來提供顯示器更好的背光效果。 With the above technical means, the present invention can use the total reflection surface on each beam splitter, so that after the light emitted by the luminous body enters the body from the light incident surface of the body, part of the light reaches the total reflection surface of the opposing beam splitter. , Will be reflected due to the principle of total reflection, increase the angle of travel of the light and deviate further from the splitting point to enter the dark energy zone between the two luminous bodies. In this way, the reflected light can effectively reduce the space between the two luminous bodies. The energy dark area of the light source can be more evenly distributed on the entire body to provide a better backlight effect of the display.
10:本體 10: body
12:入光面 12: Glossy surface
14:出光面 14: Glossy surface
20:凹部 20: recess
30:分光槽 30: Spectroscopic slot
32:分光點 32: split point
34:全反射面 34: Total reflection surface
36:凹弧面 36: concave arc
38:顯示面板 38: display panel
40:發光體 40: luminous body
50:導光板 50: light guide plate
52:發光體 52: luminous body
圖1係本發明之局部立體外觀圖。 Figure 1 is a partial perspective view of the present invention.
圖2係本發明之局部上視圖。 Figure 2 is a partial top view of the present invention.
圖3係本發明操作時之示意圖。 Figure 3 is a schematic diagram of the present invention in operation.
圖4本發明顯示器之側視示意圖。 Figure 4 is a schematic side view of the display of the present invention.
圖5係本發明另一實施例之局部上視圖。 Figure 5 is a partial top view of another embodiment of the present invention.
圖6係現有背光模組之上視示意圖。 Fig. 6 is a schematic top view of a conventional backlight module.
本發明係關於一種導光板、背光模組及顯示器,請配合參看圖1及圖2,由圖中可看到,本發明的導光板主要包含有一本體10、多數個凹部20及多數分光槽30。
The present invention relates to a light guide plate, a backlight module and a display. Please refer to Figures 1 and 2 together. It can be seen from the figures that the light guide plate of the present invention mainly includes a
該本體10的一側面係定義為一入光面12,該本體10的一頂面係定義為一出光面14,又該多數凹部20係凹設於本體10的入光面12上,該多數個分光槽30係設置於本體10的出光面14上,並分別與凹部20的位置相對應,各分光槽30與入光面12間形成有一間距,並於各分光槽30靠近入光面12的一側形成有一分光點32及一由分光點32朝兩側延伸、遠離入光面12並具有可使由凹部20進入的部分光源形成全反射效果的全反射面34,其中各分光槽30的該全反射面34係為一具有曲率的面,較佳地係為一具有變動曲率的面,而藉由呈變動曲率的全反射面34,可以精確控制每個位置曲率,使得各個位置的光線都能達到全反射效果,確保光線皆能反射而進入到兩發光體40間的能量暗區,另外,如圖5所示者,各具有曲率的全反射面34可由多個連續的小平面所構成,如此可提高本體10模具開設時的方便性,進而能降低整體的生產成本。
A side surface of the
又各分光槽30遠離入光面12的一側係形成一中央遠離入光面12的凹弧面36,該凹弧面36的相對兩端分別連接該全反射面34的相對兩端,並且各分光槽30的最大寬度係可大於所相對凹部20的最大寬度,藉此當發光體40所發出的光線在通過凹部20進入本體10時,並不會發生如圖6向內折射而縮小光線的行進角度,而是保持原本角度,或是相較於圖6以向外展開角度如圖3所示的形式後,可以利用較大寬度的分光槽30使光線能有效地被反射,以提高反射之光線進入到兩發光體40間能量暗區的機率。
The side of each light splitting
又於本體10入光面12之一側設置有一發光源,而藉此構成一背光模組,該發光源係包含有多數個分別對應於本體10的入光面12的凹部20上的發光體40,各發光體40可為一發光二極體(LED),又請配合參看圖4,於該導光板本體10的出光面14之一側設置一顯示面板38,即可構成一顯示器。
A light-emitting source is arranged on one side of the light-
如此,請配合參看圖3,當發光體40所發出的光線由本體10的入光面12進入本體10後,部份光線在抵達所相對分光槽30的全反射面34時,會因
全反射原理而反射,而朝向本體10的入光面12方向行進,而加大光線的行進角度,進而更為偏離分光點32以進入兩相鄰發光體40間的能量暗區,如此藉由這些反射的光線,便可有效地縮小兩發光體40間的能量暗區,而使發光源所發出的光線能更均勻地散佈於整個本體上,來提供顯示器更好的背光效果。
In this way, please refer to FIG. 3. When the light emitted by the
另外,各凹部20在該本體10的該出光面14方向呈凹弧形,更詳細地說,當各凹部20係呈半圓形截面,而各相對的發光體40係設置於各凹部20的圓心位置時,由發光體40所發出的部份光源在由入光面12進入本體10時,會直接進入本體10內,並不會有折射的現象,如此可避免因折射而縮小光線的行進角度,來提昇導光板整體的導光效果。
In addition, each
再者,因各分光槽30遠離入光面的一側係形成一遠離入光面12的凹弧面36,如此未經全反射面34反射的光線在進入分光槽30後,該凹弧面36可提供該些進入分光槽30內的光線一有如凹透鏡的散光效果,可令由該凹弧面36再進入導光板本體10的光線進一步的向外發散,而能使發光體40所發出的光線能更均勻地分佈於整個導光板的本體10上,使背光模組的光能更為均勻,來提昇顯示器整體的顯示效果。
Furthermore, because the side of each
10:本體 10: body
12:入光面 12: Glossy surface
14:出光面 14: Glossy surface
20:凹部 20: recess
30:分光槽 30: Spectroscopic slot
32:分光點 32: split point
34:全反射面 34: Total reflection surface
36:凹弧面 36: concave arc
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW108138333A TWI703383B (en) | 2019-10-24 | 2019-10-24 | Light guide plate, backlight module and display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW108138333A TWI703383B (en) | 2019-10-24 | 2019-10-24 | Light guide plate, backlight module and display |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI703383B true TWI703383B (en) | 2020-09-01 |
TW202117412A TW202117412A (en) | 2021-05-01 |
Family
ID=73644217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW108138333A TWI703383B (en) | 2019-10-24 | 2019-10-24 | Light guide plate, backlight module and display |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI703383B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200933247A (en) * | 2008-01-24 | 2009-08-01 | Nano Prec Corp | Side-type backlight module |
CN203422491U (en) * | 2013-06-28 | 2014-02-05 | 辅讯光电工业(苏州)有限公司 | Light guide structure, backlight module and display device |
TW201702658A (en) * | 2015-07-09 | 2017-01-16 | 揚昇照明股份有限公司 | Light guide plate and light source module |
-
2019
- 2019-10-24 TW TW108138333A patent/TWI703383B/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200933247A (en) * | 2008-01-24 | 2009-08-01 | Nano Prec Corp | Side-type backlight module |
CN203422491U (en) * | 2013-06-28 | 2014-02-05 | 辅讯光电工业(苏州)有限公司 | Light guide structure, backlight module and display device |
TW201702658A (en) * | 2015-07-09 | 2017-01-16 | 揚昇照明股份有限公司 | Light guide plate and light source module |
Also Published As
Publication number | Publication date |
---|---|
TW202117412A (en) | 2021-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9435936B2 (en) | Light guide plate with multi-directional structures | |
US6561660B2 (en) | Light guiding device of a liquid crystal display | |
US8292474B2 (en) | Optic lens assembly | |
TW201133036A (en) | Light emitting device and lens thereof | |
JP6207384B2 (en) | Illumination device and optical member | |
US11041985B2 (en) | Lightguides with asymmetric light extracting structures | |
TWI604237B (en) | Light guide plate, backlight module and display device | |
JP6073718B2 (en) | Optical lens | |
JP2010045027A (en) | Light guide plate and edge light type backlight module | |
US20160238777A1 (en) | Light guide plate ,light source module and display device | |
US8382360B2 (en) | Symmetric serrated edge light guide film having elliptical base segments | |
TW201736772A (en) | Headlight lens and headlight with same | |
US8439548B2 (en) | Symmetric serrated edge light guide having circular base segments | |
TW201326928A (en) | Asymmetric serrated edge light guide film having elliptical base segments | |
TWI703383B (en) | Light guide plate, backlight module and display | |
TWM508682U (en) | Light guide bar | |
TWI510816B (en) | Optical lens and light-emitting device using the same | |
US20130003408A1 (en) | Symmetric serrated edge light guide film having circular tip and base segments | |
TW201516533A (en) | Backlight module | |
TWI391717B (en) | A light guide plate with a partition gradient | |
KR101666511B1 (en) | A lamp apparatus for vehicles | |
TW202307366A (en) | Vehicle signal light structure and daytime running light | |
CN108916805B (en) | Car light lens | |
CN210488031U (en) | Light guide plate, backlight module and display | |
CN112711088A (en) | Light guide plate, backlight module and display |