CN100353232C - Back light module - Google Patents

Back light module Download PDF

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Publication number
CN100353232C
CN100353232C CNB2005100544514A CN200510054451A CN100353232C CN 100353232 C CN100353232 C CN 100353232C CN B2005100544514 A CNB2005100544514 A CN B2005100544514A CN 200510054451 A CN200510054451 A CN 200510054451A CN 100353232 C CN100353232 C CN 100353232C
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China
Prior art keywords
light
display panel
brightness
show image
backlight module
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CN1645219A (en
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胡至仁
林永伦
张志明
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AU Optronics Corp
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AU Optronics Corp
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Abstract

The present invention relates to a backlight module which is suitable for a displayer with a display panel. The backlight module comprises a light-emitting unit and a control unit, wherein the light-emitting unit provides light to the display panel. When the display panel displays images in a first display mode, the control unit drives the light-emitting unit to emit light in first total brightness; when the display panel displays images in a second display mode, the control unit drives the light-emitting unit to emit light in second total brightness.

Description

Backlight module
Technical field
The present invention relates to a kind of backlight module, particularly relate to a kind of backlight module that is applicable to display with 2D and 3D display mode.
Background technology
In present display, some has the function that two dimension (2D) shows and three-dimensional (3D) shows simultaneously.Fig. 1 represents traditional 2D-3D display.Display 1 comprises display panel 10,2D/3D conversion display panel 11, reaches backlight module 12.Backlight module 12 provides the light of same brightness under 2D and 3D pattern.
Consult Fig. 2, when display panel 10 during with 2D display mode show image, 2D/3D conversion display panel 11 is transmission region TA all, and the luminous energy that makes backlight module 12 is all by to display panel 10.Therefore, beholder's right and left eyes is seen identical image, and forms flat image in brain reorganization back, is the 2D image.
Consult Fig. 3, when display panel 10 during with 3D display mode show image, 2D/3D conversion display panel 11 is for forming a plurality of black region BA and a plurality of transmission region TA of paliform, and the black region BA of 2D/3D conversion display panel 11 has covered the part light from backlight module 12.Because the direct projection of light, beholder's right and left eyes is seen different images.Among Fig. 3, indicate " R " image seen at display panel 10 of expression right eye, and indicate " L " image seen at display panel 10 of expression left eye.The different images that right and left eyes is seen forms stereopsis in brain reorganization back, is the 3D image.
Because when display panel 10 during with 3D display mode show image, the black region BA of 2D/3D conversion display panel 11 has covered the part light from backlight module 12, so the light minimizing that obtained of display panel 10.With the 2D pattern by comparison, the 3D image that the beholder saw also comes secretly than 2D image.Therefore, when display panel 10 switched between 2D and 3D pattern, image brilliance can constantly change.
Summary of the invention
In view of this, in order to address the above problem, fundamental purpose of the present invention is to provide a kind of backlight module, is applicable to display, and the light source of different brightness is provided according to the pattern of display panel.
According to above-mentioned purpose, the present invention proposes a kind of backlight module, is applicable to the display with display panel, and this backlight module comprises luminescence unit and control module.Luminescence unit provides light to display panel.When display panel during with the first display mode show image, control module driven for emitting lights unit is luminous with first total brightness, and when display panel during with the second display mode show image, it is luminous with second total brightness that control module drives this luminescence unit.
The present invention also provides a kind of backlight module, is applicable to the display with display panel.Display panel is divided into first viewing area and second viewing area.First and second luminescence unit of this backlight module.Corresponding first viewing area of first luminescence unit.When first viewing area during with the first display mode show image, this first luminescence unit is luminous with first brightness, and when first viewing area during with the second display mode show image, this first luminescence unit is luminous with second brightness greater than first brightness.Corresponding second viewing area of second luminescence unit.When second viewing area during with the first display mode show image, second luminescence unit is luminous with first brightness, and when second viewing area during with the second display mode show image, second luminescence unit is luminous with second brightness.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 is the display of traditional 2D-3D;
Fig. 2 is the synoptic diagram of display panel with 2D pattern show image;
Fig. 3 is the synoptic diagram of display panel with 3D pattern show image;
Fig. 4 is the backlight module synoptic diagram of first embodiment of the invention;
Fig. 5 is the backlight module synoptic diagram of second embodiment of the invention;
Fig. 6 is the display of third embodiment of the invention;
Fig. 7 A to Fig. 7 C is the backlight module synoptic diagram of third embodiment of the invention.
Embodiment
First embodiment
Fig. 4 represents the backlight module synoptic diagram of first embodiment of the invention.The backlight module of first embodiment is suitable for Fig. 1 display, and replaces backlight module 12 with backlight module 42.
Backlight module 42 is for lateral margin formula backlight module and comprise luminescence unit 420, control module 421, reach light guide plate 422.Luminescence unit 420 places a side of light guide plate 422 and is driven by control module 421, and the light that luminescence unit 420 provided is the 2D/3D that arrives conversion display panel 11 by light guide plate 422.When display panel 10 during with 2D display mode show image, control module 421 is with voltage V1 driven for emitting lights unit 420, and luminescence unit 420 provides the light of first total brightness.When display panel 10 during with 3D display mode show image, control module 421 is with the voltage V2 driven for emitting lights unit 420 greater than voltage V1, and luminescence unit 420 provides the light of second total brightness.Because voltage V2 is greater than voltage V1, for same luminescence unit 420, in second total brightness under the 3D pattern greater than first total brightness under the 2D pattern.
With another viewpoint, suppose that luminescence unit 420 is current driving element.When display panel 10 during with 2D display mode show image, control module 421 is with electric current I 1 driven for emitting lights unit 420.When display panel 10 during with 3D display mode show image, control module 421 is with the electric current I 2 driven for emitting lights unit 420 greater than electric current I 1.Because electric current I 2 is greater than electric current I 1, for same luminescence unit 420, in second total brightness under the 3D pattern greater than first total brightness under the 2D pattern.
Therefore, when display panel 10 during with 3D display mode show image, though the black region BA of 2D/3D conversion display panel 11 has covered the part light from backlight module 42, because the light that backlight module 42 provides has higher brightness, the light of crested can compensate thus.
Second embodiment
Fig. 5 represents the backlight module synoptic diagram of second embodiment of the invention.The backlight module of first embodiment is suitable for Fig. 1 display, and replaces backlight module 12 with backlight module 52.
Backlight module 52 is for lateral margin formula backlight module and comprise luminescence unit 520, control module 521, reach light guide plate 522.Luminescence unit 520 place a side of light guide plate 522 and light that it provided by light guide plate 522 2D/3D that arrives conversion display panel 11.Luminescence unit 520 also comprises a plurality of light-emitting component D5 1To D5 5Light-emitting component D5 1To D5 5Driven by control module 521.When display panel 10 during with 2D display mode show image, control module 521 is the drive part light-emitting component only, for example light-emitting component D5 1, D5 3And D5 5Light-emitting component D5 1, D5 3And D5 5Luminous together, at this moment, 520 light that first total brightness is provided of luminescence unit.When display panel 10 during with 3D display mode show image, control module 521 drives whole light-emitting component D5 1To D5 5At this moment, 420 light that second total brightness is provided of luminescence unit.Because greater than the quantity under the 2D pattern, therefore second total brightness is greater than first total brightness in light-emitting component quantity luminous under the 3D pattern.
Therefore, when display panel 10 during with 3D display mode show image, though the black region BA of 2D/3D conversion display panel 11 has covered the part light from backlight module 52, but because the light that backlight module 52 provides has higher brightness, the light of crested can compensate thus.
In the present embodiment, driven light-emitting component under the 3D pattern does not exceed with whole light-emitting components.According to present embodiment, only need to reach same effect greater than the quantity under the 2D pattern in light-emitting component quantity luminous under the 3D pattern.
The 3rd embodiment
Fig. 6 represents the display of third embodiment of the invention.Display 6 comprises image display panel 60,2D/3D conversion display panel 61 and backlight module 62.Wherein, display panel 60 is divided into viewing area A1 and viewing area A2.Display panel 60 has three kinds of display modes.
Fig. 7 A to Fig. 7 B represents the backlight module synoptic diagram of third embodiment of the invention.Backlight module 62 is for direct type backlight module and comprise luminescence unit 620 and control module 621.Luminescence unit 620 directly provides light to 2D/3D conversion display panel 61 and comprise a plurality of light-emitting component D6 1To D6 9Light-emitting component D6 1To D6 9Driven by control module 621.Light-emitting component D6 1To D6 4And D6 6To D6 9Corresponding viewing area A1, and light-emitting component D6 5Corresponding viewing area A2.
Consult Fig. 7 A, when display panel 60 was first pattern, viewing area A1 and A2 were during with 2D display mode show image.Control module 621 is with the first driven light-emitting component D6 1To D6 9, make light-emitting component D6 1To D6 9All luminous with first brightness.At this moment, light-emitting component D6 1To D6 9The brightness summation be first total brightness, i.e. 620 light that first total brightness is provided of luminescence unit.
Consult Fig. 7 B, when display panel 60 is second pattern, viewing area A1 with 2D pattern show image and viewing area A2 with 3D display mode show image.Control module 621 is with the first driven light-emitting component D6 1To D6 4And D6 6To D6 9, make it luminous, and control module 521 is with the second driven light-emitting component D6 greater than first voltage with first brightness 5, make it luminous with second brightness greater than first brightness.At this moment, light-emitting component D6 1To D6 9The brightness summation be second total brightness, i.e. 620 light that second total brightness is provided of luminescence unit.
Consult Fig. 7 C, when display panel 60 was three-mode, viewing area A1 and A2 were during with 3D display mode show image, and control module 621 is with the second driven light-emitting component D6 1To D6 9, make it all luminous with second brightness.At this moment, light-emitting component D6 1To D6 9The brightness summation be the 3rd total brightness, i.e. 620 light that the 3rd total brightness is provided of luminescence unit.Learn that according to above-mentioned the 3rd total brightness is greater than second total brightness, and second total brightness is greater than first total brightness.
Therefore, according to present embodiment, in display panel 60, when big more, 620 of luminescence units provide the more light of high brightness with the part of 3D show image, and the light that is covered by the black region BA of 2D/3D conversion display panel 61 can compensate thus.
According to embodiments of the invention, when the display panel of display had 2D and 3D display mode, backlight module can provide the light source of different brightness according to the pattern of display panel.When display panel all or part of is during with 3D pattern show image, backlight module then can provide the light source of higher brightness to display panel.Therefore, under the 3D pattern, the luminance brightness that display panel received can not changed the display panel shelter because of 2D/3D and reduce.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to limit scope of the present invention; anyly be familiar with this operator; without departing from the spirit and scope of the present invention; can do some change and retouching, so protection scope of the present invention should be with being as the criterion that claim was defined.

Claims (11)

1. a backlight module is applicable to the display with a display panel, and this backlight module comprises:
One luminescence unit is in order to provide light to this display panel; And
One control module, couple this luminescence unit, when this display panel during with one first display mode show image, luminous in order to drive this luminescence unit with one first total brightness, and when this display panel during with one second display mode show image, luminous with one second total brightness in order to drive this luminescence unit, this second total brightness is greater than this first total brightness;
Wherein, this first pattern is a two dimensional mode, and this second pattern is the 3-D display pattern.
2. backlight module as claimed in claim 1, wherein,
When this display panel during with this first display mode show image, this control module is with one first this luminescence unit of driven; And
When this display panel during with this second display mode show image, this control module is with one second this luminescence unit of driven greater than this first voltage.
3. backlight module as claimed in claim 1, wherein,
When this display panel during with this first display mode show image, this control module is with one first this luminescence unit of current drives; And
When this display panel during with this second display mode show image, this control module is with one second this luminescence unit of current drives greater than this first electric current.
4. backlight module as claimed in claim 1, wherein,
This luminescence unit comprises a plurality of light-emitting components;
When this display panel during with this first display mode show image, this control module drives the light-emitting component of one first quantity in this each light-emitting component; And
When this display panel during with this second display mode show image, it is luminous with this second brightness that this control module drives the light-emitting component of one second quantity in this each light-emitting component, and this second quantity is greater than this first quantity.
5. backlight module as claimed in claim 1, wherein,
This backlight module is a direct type backlight module;
This display panel comprises one first viewing area and one second viewing area;
When this display panel during with this first display mode show image, this first and second viewing area is all with the two-dimensional model show image; And
When this display panel during with this second display mode show image, this first viewing area is with the two-dimensional model show image, and this second viewing area is with the three dimensional pattern show image.
6. backlight module as claimed in claim 5, wherein, this luminescence unit comprises a plurality of light-emitting components, this each light-emitting component of a part is to should first viewing area, and this each light-emitting component of another part is to should second viewing area.
7. backlight module as claimed in claim 6, wherein,
When this display panel during with this first display mode show image, each this light-emitting component is all luminous with one first brightness; And
When this display panel during with this second display mode show image, luminous to each this light-emitting component that should first viewing area with this first brightness, and luminous to each this light-emitting component that should second viewing area with one second brightness greater than this first brightness.
8. backlight module as claimed in claim 5, wherein, when this display panel during more with a three-mode show image, this first and second viewing area is all with the three dimensional pattern show image, and it is luminous with one the 3rd total brightness that this control module drives this luminescence unit, and the 3rd total brightness is greater than this second total brightness.
9. a direct type backlight module is applicable to the display with a display panel, and this display panel is divided into one first viewing area and one second viewing area, and this backlight module comprises:
One first light-emitting component, to should first viewing area, wherein, when this first viewing area during with a two dimensional mode show image, this first light-emitting component is luminous with one first brightness, and when this first viewing area during with a 3-D display pattern show image, this first light-emitting component is luminous with one second brightness greater than this first brightness; And
One second light-emitting component, to should second viewing area, wherein, when this second viewing area during with this two dimensional mode show image, this second light-emitting component is luminous with this first brightness, and when this second viewing area during with this 3-D display pattern show image, this second light-emitting component is luminous with this second brightness greater than this first brightness.
10. direct type backlight module as claimed in claim 9, wherein, when this first and second light-emitting component during by one first driven, this first and second luminescence unit is luminous with this first brightness, and when this first and second light-emitting component during by one second driven, this first and second light-emitting component is luminous with this second brightness.
11. direct type backlight module as claimed in claim 10, wherein, this second voltage is greater than this first voltage.
CNB2005100544514A 2005-03-10 2005-03-10 Back light module Active CN100353232C (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102446481A (en) * 2010-10-09 2012-05-09 奇美电子股份有限公司 Two-dimensional display, backlight module and drive method thereof
TWI467446B (en) * 2012-09-28 2015-01-01 Au Optronics Corp Optical touch pad and brightness control method thereof
CN104006324A (en) * 2013-02-25 2014-08-27 京东方科技集团股份有限公司 Backlight module and display device comprising same
CN106791796B (en) * 2017-01-11 2019-02-01 京东方科技集团股份有限公司 Display panel and its driving method and production method, display device
CN107833566B (en) * 2017-09-30 2019-11-22 明基智能科技（上海）有限公司 The method and display system of adjustment display image Aspect Ratio

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597629A1 (en) * 1992-11-11 1994-05-18 Sharp Kabushiki Kaisha Display
JPH08125947A (en) * 1994-10-21 1996-05-17 Canon Inc Picture display device
CN1564068A (en) * 2004-04-22 2005-01-12 友达光电股份有限公司 Method and device for regulating backlight brightness
CN1591089A (en) * 2003-07-28 2005-03-09 三星电子株式会社 Image displaying unit of a 3D image system having multi-viewpoints

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597629A1 (en) * 1992-11-11 1994-05-18 Sharp Kabushiki Kaisha Display
JPH08125947A (en) * 1994-10-21 1996-05-17 Canon Inc Picture display device
CN1591089A (en) * 2003-07-28 2005-03-09 三星电子株式会社 Image displaying unit of a 3D image system having multi-viewpoints
CN1564068A (en) * 2004-04-22 2005-01-12 友达光电股份有限公司 Method and device for regulating backlight brightness

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