JP2010092686A - Illumination device, display device, and electronic equipment - Google Patents

Abstract

An illumination device capable of alleviating a steep luminance change at a boundary portion between adjacent divided regions without increasing a load on a drive system, and a display device and an electronic apparatus using the illumination device.
Since each center of a lens 52b is provided so as to be shifted outward from each light source 51b with respect to the center point 11 of the unit region 15, the light distribution of each light source 51 is shifted outside the unit region 15. Accordingly, the light flux from the entire light source unit 5 b is spread outside the unit region 15. The spread light beam from the entire light source unit 5 b overlaps the light beam from the entire light source unit 5 b in the unit region 15 adjacent to the unit region 15 included in the backlight 2. Thereby, it is possible to alleviate a steep luminance change at the boundary between the unit region 15 and the adjacent unit region 15 without increasing the load on the drive system.
[Selection] Figure 6

Description

  The present invention relates to an illumination device, a display device, and an electronic device used for, for example, a liquid crystal display.

  In the liquid crystal display, since the pixels of the liquid crystal panel do not emit light, a so-called direct-type backlight having a plurality of light sources is disposed on the back side of the liquid crystal panel. The backlight illuminates the back of the liquid crystal panel to display an image.

  Such a direct type backlight employs a partial drive method. In the partial drive method, an image for one frame of a video signal is divided into a plurality of regions corresponding to each light source constituting the backlight, and the luminance of each light source is determined according to luminance information for each divided region. This is a method for controlling. (For example, refer to Patent Document 1). This reduces the power consumption of the backlight and increases the contrast ratio on the display screen.

  In recent years, thinning of liquid crystal displays has been demanded. In the above-described liquid crystal display using a direct backlight, it is necessary to reduce the distance between the liquid crystal panel and the backlight in order to reduce the thickness. However, since the light emitted from each light source is diffused light, if the distance becomes small, the irradiation area of the light from each light source on the liquid crystal panel becomes small, and it becomes difficult to faithfully reproduce the original image. Therefore, in order to secure an irradiation area that covers the entire liquid crystal panel, the number of light sources included in the backlight is increased, and the light source that illuminates each area of the divided display screen is composed of a plurality of light sources. Conceivable.

  As described above, in a backlight in which a plurality of light sources correspond to one divided area, the distance between the liquid crystal panel and the backlight is set so that the light beams traveling from the light sources to the liquid crystal panel do not overlap between the liquid crystal panel and the backlight. In such a case, the following problems arise.

JP 2007-286627 A (paragraph [0004])

  For example, when each light source emits light so that the brightness is different for each divided region, the smaller the distance between the liquid crystal panel and the backlight, that is, the smaller the irradiation area from each light source to the liquid crystal panel, the adjacent divided region The change in the brightness of light at the boundary between them becomes steep. This is considered to be because the irradiation area becomes smaller as the distance between the liquid crystal panel and the backlight becomes smaller, and the uniformity of the illuminance distribution in the liquid crystal panel for each divided region increases. Conversely, as the distance between the liquid crystal panel and the backlight increases, the irradiation area increases, and the uniformity of the illuminance distribution in the liquid crystal panel for each divided region decreases, so that light is emitted at the boundary between adjacent divided regions. It will be blurred and the luminance change will be moderate.

  That is, as the distance between the liquid crystal panel and the backlight is smaller, smooth luminance changes are not expressed at the boundary portion between the divided regions, and the original image may not be faithfully reproduced. In order to solve this problem, it is conceivable that the backlight is configured so that each divided region is made smaller and the light source that illuminates each region is composed of one light source. However, in that case, construction of a new arithmetic circuit, installation of wiring, etc. are required, and the load on the drive system increases.

  In view of the circumstances as described above, an object of the present invention is to provide a lighting device that can alleviate a steep luminance change at a boundary portion between adjacent divided regions without increasing the load on the drive system. It is to provide a display device and an electronic device.

In order to achieve the above object, a lighting device according to one embodiment of the present invention includes a substrate, a plurality of light sources, and a plurality of lenses.
The plurality of light sources are disposed in at least one region among the plurality of regions of the substrate.
The plurality of lenses are provided for each of the light sources in order to set a light distribution from the plurality of light sources, and the centers of the plurality of lenses are outside the plurality of light sources with respect to the center of the one region. It arranges so that it may slip.

  As described above, since the centers of the plurality of lenses are shifted outward from the light sources with respect to the center of the region, the intensity distribution of light emitted from the lenses (hereinafter referred to as light distribution characteristics) is also obtained. Shifts outward with respect to the center of the region. Accordingly, the light flux from all of the plurality of light sources included in one area is spread around the area and overlaps with the light flux from the light sources in other areas adjacent to the area. As a result, it is possible to alleviate a steep luminance change at the boundary between adjacent divided regions without increasing the load on the drive system.

The illumination device may further include a reference light source and a reference lens.
The reference light source is disposed at the center of the one region, the reference lens is provided for setting a light distribution from the reference light source, and the center of the reference lens is at the center of the one region. It may be arranged.

  Each center of the plurality of lenses may be positioned on a line in a direction from the center of the one region toward the light source and on an extension line from the light source.

  Thereby, the light distribution from each light source shifts in a direction from the center of the region toward each light source. Therefore, the light flux from the entire plurality of light sources is spread uniformly around the area. Thereby, it is possible to suppress the occurrence of unevenness in the luminance distribution around one region.

A display device according to one embodiment of the present invention includes a display panel, a lighting device, and a control unit.
The display panel displays a video corresponding to the input video signal.
The illumination device is provided for each light source that sets a light distribution from the substrate, a plurality of light sources arranged in at least one of the plurality of regions of the substrate, and the plurality of light sources. A plurality of lenses, each center of the plurality of lenses being arranged so as to be shifted outward from the plurality of light sources with respect to the center of the one region, the display panel Irradiate light from the plurality of light sources.
The control unit controls the luminance of light from the plurality of light sources in units of regions according to the video signal.

An electronic device according to one embodiment of the present invention includes a display device including a display panel, a lighting device, and a control unit.
The display panel displays a video corresponding to the input video signal.
The illumination device is provided for each light source that sets a light distribution from the substrate, a plurality of light sources arranged in at least one of the plurality of regions of the substrate, and the plurality of light sources. A plurality of lenses, each center of the plurality of lenses being arranged so as to be shifted outward from the plurality of light sources with respect to the center of the one region, the display panel Irradiate light from the plurality of light sources.
The control unit controls the luminance of light from the plurality of light sources in units of regions according to the video signal.

  As described above, according to the present invention, it is possible to alleviate a steep luminance change at a boundary portion between adjacent divided regions without increasing the load on the drive system.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a display device according to an embodiment of the present invention.

  The display device 100 includes a liquid crystal panel 4 as a display panel for displaying an image, a backlight 2 (illumination device) disposed on the back side of the liquid crystal panel 4, and various controls for the backlight 2 and the liquid crystal panel 4. The control part 3 which performs is provided.

  The display device 100 includes a liquid crystal panel 4 and a source driver 21 and a gate driver 22 that input display drive signals to the liquid crystal panel 4.

  FIG. 2 is a plan view showing the configuration of the backlight 2. The backlight 2 includes a substrate 23 and a plurality of light source units 5 arranged in a matrix on the substrate 23. The backlight 2 can set the luminance for each predetermined number of light source units 5 and can irradiate the liquid crystal panel 4 with light. That is, the backlight 2 has a plurality of driving units 6, and the luminance of light from the plurality of light source units 5 included in the driving unit 6 is set for each driving unit 6.

  The plurality of drive units 6 may be, for example, 40 regions formed by dividing the substrate 23 into 5 parts in the vertical direction and 8 parts in the horizontal direction. However, the configuration is not limited to this, and the number of drive units 6 may be any number.

  Thus, the substrate 23 of the backlight 2 is divided into a plurality of regions for each drive unit 6. The substrate 23 may be composed of a single substrate, or a substrate is prepared for each drive unit 6 divided into a plurality of regions, and these substrates are arranged in a matrix to form the substrate 23. May be.

  FIG. 3 is a block diagram showing the configuration of the control unit 3.

  The control unit 3 includes a video signal detection circuit 7, a light emission luminance setting unit 8, a liquid crystal panel control circuit 9, and a backlight driving unit 10.

  The video signal detection circuit 7 includes a luminance signal detection circuit 7 a that detects a luminance signal in the video signal 24 and a color signal detection circuit 7 b that detects a color signal.

  The light emission luminance setting unit 8 sets the light emission luminance for each drive unit 6 based on the luminance signal detected by the luminance signal detection circuit 7a.

  The backlight driving unit 10 individually drives the light source for each drive unit 6 according to the light emission luminance set by the light emission luminance setting unit 8. Typically, the drive by the backlight drive unit 10 uses PWM (Pulse Width Modulation) control, but other drive methods may be used.

  The liquid crystal panel control circuit 9 generates a display drive signal for performing display drive of the liquid crystal panel 4 based on the color signal detected by the color signal detection circuit and the luminance signal. The display drive signal generated by the liquid crystal panel control circuit 9 is input to each pixel of the liquid crystal panel 4 via the source driver 21 and the gate driver 22 of the display device 100.

  FIG. 4 is a plan view showing one drive unit 6 of the backlight 2.

  The drive unit 6 has nine light source units 5 arranged on the unit region 15 of the substrate 23. The light source unit 5 includes a light source 51a and a lens 52a provided thereon (light source unit 5a), and a light source 51b and a lens 52b provided thereon (light source unit 5b).

  One light source 51a included in the light source unit 5a is arranged at the substantial center point 11 on the unit region 15 (reference light source). Eight light sources 51 b included in each light source unit 5 b are arranged around the center point 11 on the unit region 15. The light sources 51a and 51b are arranged in a matrix at substantially equal intervals in the vertical and horizontal directions on the unit region 15, for example, and the entire substrate 23 is arranged in a matrix at such equal intervals.

  A lens 52a (reference lens) is provided on the light source 51a, and a lens 52b is also provided on the surrounding light source 51b. These lenses 52a and 52b set the light distribution of the light sources 51a and 51b. For example, in the present embodiment, the light emission surfaces of the lenses 52a and 52b have a convex shape such as a predetermined spherical surface or a toroidal surface that makes the light emitted from the light sources 51a and 51b uniform.

  FIG. 5 is a cross-sectional view taken along line AA of the drive unit 6 shown in FIG. Two light source units 5 b are arranged on both sides of the light source unit 5 a arranged at the center point 11 on the unit region 15. As shown in FIG. 5, the centers of the lenses 52 b included in the two light source units 5 b are provided so as to be shifted outward from the respective light sources 51 b with respect to the center point 11 of the unit region 15. (See broken line in FIG. 5).

  FIG. 6 is a diagram showing a state in which light is emitted to the liquid crystal panel 4 from the light source units 5a and 5b included in the drive unit 6 shown in FIG. FIG. 7 is a diagram illustrating a case where each center of the lens 52b and each light source 51b are not misaligned in the drive unit 6 illustrated in FIG.

  Since each center of the lens 52 b is provided so as to be shifted outward from each light source 51 b with respect to the center point 11 of the unit region 15, the light distribution of each light source 51 is shifted outside the unit region 15. Therefore, as shown in FIG. 6, the light flux from the entire light source unit 5 b is spread outside the unit region 15. When the centers of the lenses 52b and the light sources 51b are not displaced from each other, the light flux from the entire light source unit 5b is not spread outside the unit region 15, as shown in FIG.

  The light flux from the entire spread light source unit 5 b shown in FIG. 6 overlaps with the light flux from the entire light source unit 5 b in the unit region 15 adjacent to the unit region 15 included in the backlight 2. Thereby, it is possible to alleviate a steep luminance change at the boundary between the unit region 15 and the adjacent unit region 15 without increasing the load on the drive system.

  Further, in the present embodiment, the center of each lens 52b is on a line (broken line in FIG. 4) in a direction from the center point 11 of the unit region 15 to each light source 51b and on an extension line from each light source 51b. is doing. Thereby, the light distribution from each light source 51b shifts in the direction from the center point 11 of the unit region 15 toward each light source 51b. Therefore, the light flux from the entire light source unit 5 b included in the unit region 15 is spread uniformly around the unit region 15. Thereby, it is possible to suppress the occurrence of unevenness in the luminance distribution around the unit region 15.

  In the present embodiment, nine light source units 5 are arranged on the unit region 15, but the present invention is not limited to this. Typically, the number of light source units 5 arranged in the unit region 15 is 3, 9, or 16, but any number may be used as long as it is plural. Further, there may be a configuration in which only the light source unit 5b is arranged without the light source unit 5a.

  FIG. 8 is a cross-sectional view showing an example of the substrate 23 and the light source unit 5. FIG. 8A shows the light source unit 5 a provided on the substrate 23. FIG. 8B shows the light source unit 5 b provided on the substrate 23.

  As shown in FIG. 8A, the light source unit 5 a includes a submount substrate 17 that is bonded to the insulating layer 16 provided on one surface of the substrate 23 by a heat conductive adhesive 18. A light-emitting diode chip 51a, which is the light source 51a, is surface-mounted on the submount substrate 17. The light emitting diode chip 51a is electrically connected to an electrode portion (not shown) provided on the submount substrate 17, and the electrode portion is electrically connected to the electrode portion 19 on the substrate 23 side by a bonding wire 20. Yes.

  The light emitting diode chip 51a is sealed with a transparent resin molded body 52a having a lens shape, which is the lens 52a. As shown to Fig.8 (a), even the area | region containing the connection part of the bonding wire 20 and the electrode part 19 by the side of the board | substrate 23 is sealed by the resin molding 52a. Note that the light source unit 5a shown in FIG. 8A is configured such that the center of the resin molded body 52a is positioned substantially at the center of the light emitting diode chip 51a.

  The light source unit 5b shown in FIG. 8B is the same as the light source unit 5a except that the center of the resin molded body 52b that is the lens 52b is shifted from the center of the light-emitting diode chip 51b that is the light source 51b. It is a simple configuration. The center of the resin molded body 52b of the light source unit 5b shown in FIG. 8B is shifted from the center (center line d) of the light emitting diode chip 51b by a shift amount c in a direction substantially parallel to the main surface of the substrate 23. It is provided with a shift.

FIG. 9 is a graph showing the light distribution characteristics of the light source units 5a and 5b shown in FIG. The light distribution characteristics of the light source units 5a and 5b on the paper surface (on the XY plane) in FIG. 8 are shown in the graph. In this case, the sizes of the light emitting diode chips 51a and 52b were approximately square with one side being 0.35 mm, and the diameters of the resin molded bodies 52a and 52b were 2.5 mm.
Further, in the light source unit 5b, the deviation c of the center of the resin molded body 52b from the center of the light source 51b is set to c = 200 μm.

  From the light distribution characteristic of the light source unit 5a drawn by the solid line in the graph of FIG. 9, it can be seen that the light distribution of the light source unit 5a spreads symmetrically on the XY plane in FIG. On the other hand, from the light distribution characteristic of the light source unit 5b drawn with a broken line, it can be seen that the light distribution of the light source unit 5b spreads out in the X-axis direction on the XY plane in FIG. That is, the light distribution of the light source unit 5b is shifted in the same direction as the positional deviation from the light source 51b at the center of the resin molded body 52b of the light source unit 5b. Thereby, the light beam from the light source unit 5b is also spread in the same direction as the positional deviation from the light source 51b at the center of the resin molded body 52b.

  Next, the number of light source units 105 included in the drive unit 106 and the irradiation area S on the liquid crystal panel 104 by the light of the entire light source unit 105 will be described using a comparative example shown in FIG.

  Since the light emitted from each light source unit 105 to the liquid crystal panel 104 is diffused light, the irradiation area on the liquid crystal panel 104 of light from each light source unit 105 decreases as the distance between the drive unit 106 and the liquid crystal panel 104 decreases. S becomes smaller. Therefore, the irradiation area S on the liquid crystal panel 104 by the light of the entire light source unit 105 included in the drive unit 106 is also reduced. In this case, if the number of light source units 105 included in the drive unit 106 is increased, the reduced irradiation area S can be a desired area.

In FIG. 10, when the distance between the drive unit 106 and the liquid crystal panel 104 is t ₁ , a desired irradiation area S is secured by light from one light source unit 105 arranged in the drive unit 106. When the distance between the drive unit 106 and the liquid crystal panel 104 is t ₂ which is smaller than t ₁ , a desired irradiation area S is secured by the light from the four light source units 105 arranged in the drive unit 106. ing. Further, when the distance between the drive unit 106 and the liquid crystal panel 104 is t ₃ which is smaller than t ₂ , the desired irradiation area S is set by the light from the nine light source units 105 arranged in the drive unit 106. It is secured. In other words, the smaller the distance between the drive unit 106 and the liquid crystal panel 104, the greater the number of light source units 105 included in the drive unit 106 in order to ensure the desired irradiation area S.

FIG. 11 is a diagram illustrating a state in which three drive units 106 including nine light source units 105 illustrated in FIG. 10 are arranged to emit light to the liquid crystal panel 104. As shown in FIG. 10, the distance between the drive unit 106 and the liquid crystal panel 104 is t ₃ .

  FIG. 11A shows a liquid crystal panel of light from the entire three drive units 106 arranged when the luminance of the light from each light source unit 105 included in the three drive units 106 is almost the maximum value. 10 is a graph showing the intensity of light in an irradiation region on 104. FIG. 11B is also a graph showing the light intensity in the irradiation region on the liquid crystal panel 104 of the light from the entire three drive units 106 arranged side by side. In FIG. 11B, the luminance of light from each light source unit 105 included in the central drive unit 106 among the three drive units 106 arranged in a row is almost the maximum value. In addition, the luminance of light from each of the light source units 105 included in the drive units 106 adjacent to the center drive unit 106 among the three drive units 106 arranged in a row is approximately 50% of the maximum value. Yes.

  In the case of FIG. 11A, as shown in the graph, the light intensity in the irradiation region on the liquid crystal panel 104 of the light from the entire three drive units 106 arranged is substantially uniform at the maximum value.

  In the case of FIG. 11B, the intensity of the light in the irradiation region on the liquid crystal panel 104 of the light from the entire three drive units 106 arranged as shown in the graph of FIG. That is, on the liquid crystal panel 104, in the region that receives the light from the central drive unit 106, the light having the maximum intensity is received from the central drive unit 106. Light having an intensity smaller than the maximum value is received from the adjacent drive units 6. In this case, in the display screen of the liquid crystal panel 104, the luminance is different between the region that receives light from the central drive unit 106 of the three drive units 106 arranged side by side and the region that receives light from the drive units 106 adjacent to both sides. Displayed.

  FIG. 12 is a plan view showing the display screen 112 of the liquid crystal panel 104. In FIG. 12, the luminance on the display screen 112 in the case where the light intensity in the irradiation region on the liquid crystal panel 104 of the light from the entire three drive units 106 arranged in the manner shown in the graph of FIG. Is schematically shown.

  As shown in the graph of FIG. 11B, the light intensity at the boundary between the central drive unit 106 and the drive units 106 on both sides of the drive units 106 arranged in a row changes steeply. For this reason, the luminance on the display screen 112 due to the light from each drive unit 106 also changes sharply. Therefore, on the display screen 112, as shown in FIG. 12, there is a possibility that the luminance change is displayed step by step.

  FIG. 13 is a diagram illustrating a state in which light is irradiated from each drive unit 6 to the liquid crystal panel 4 when the backlight 2 according to the present embodiment is employed. In FIG. 13A and FIG. 13B, the setting of the luminance of light from each drive unit 6 is the same as in FIG.

  The light beam from the entire light source unit 5 b arranged around the center point 11 of the unit region 15 of each of the three drive units 6 arranged in a row is spread around the unit region 15. Thereby, as shown in FIG. 13, the light beams from the adjacent drive units 6 among the three drive units 6 arranged overlap each other. Therefore, as shown in the graph of FIG. 13A, the irradiation area on the liquid crystal panel 4 of the light from the entire three drive units 6 arranged is expanded. Further, as shown in the graph of FIG. 13B, the change in light intensity at the boundary between the central drive unit 6 and the adjacent drive units 6 of the three drive units 6 arranged side by side becomes moderate. Thereby, the stepwise display of the luminance change on the display screen 112 of the liquid crystal panel 4 as shown in FIG. 12 is suppressed.

  Examples of electronic devices on which the display device according to the present embodiment is mounted include a liquid crystal television, a PC (Personal Computer), a PDA (Personal Digital Assistant), a mobile phone, a car navigation system, and the like.

(Modification)
The embodiment according to the present invention is not limited to the above-described embodiment, and various other embodiments are conceivable.

  FIG. 14A is a plan view showing a light source unit 200b according to another embodiment, and FIG. 14B is a side view thereof. In the following description, the description of the same parts as those of the light source unit 5b shown in FIG. 8B will be omitted or simplified.

  The light source unit 200b has the same configuration as the light source unit 51b except that the shape of the lens 252b included in the light source unit 200b is different from the shape of the lens 52b included in the light source unit 5b. The lens 252b included in the light source unit 200b is a convex lens, and the curvature of the portion that emits light from the light source 51b is smaller than that of the lens 52b included in the light source unit 5b. With the configuration of the lens 252b, the directivity of light from the light source unit 200b is higher than the directivity of light from the light source unit 5b.

  FIG. 14C is a graph showing the light distribution characteristics from the light source unit 200b. In the graph of FIG. 14C, the light distribution characteristic from the light source unit 200a (not shown) in which there is no positional deviation between the center of the lens 252b and the center of the light source 51b is also indicated by a broken line. As shown in the graph of FIG. 14C, the light distribution from the light source unit 200b is shifted from the light distribution from the light source unit 200a. The direction of deviation of light distribution from the light source unit 200b is the same as the direction of positional deviation from the light source 51b at the center of the lens 252b.

  FIG. 15A is a plan view showing a light source unit 300b according to another embodiment, and FIG. 15B is a side view thereof.

  The light source unit 300b has the same configuration as the light source unit 51b except that the shape of the lens 352b included in the light source unit 300b is different from the shape of the lens 52b included in the light source unit 5b. The lens 352b included in the light source unit 300b is a concave lens, and the light distribution from the light source unit 300b is wider than the light distribution from the light source unit 51b.

  As shown in the graph of FIG. 15C, the light distribution from the light source unit 300b is shifted in the same direction as the positional deviation from the light source 51b at the center of the lens 352b.

  The shape of the lens according to another embodiment of the present invention is not limited to the shape of the lenses 252b and 352b. That is, even in lenses having other various shapes, the same effects as in the above embodiment can be obtained by appropriately setting the positional deviation between the center of the lens and the center of the light source 51b.

  Examples of the light source unit according to another embodiment of the present invention include the following. For example, a light source unit in which a lens is provided on a light emitting diode packaging module in which a light emitting diode chip is sealed with a transparent resin having a flat shape, for example. In this case, the lens according to each of the embodiments described above, or a lens having a toroidal light exit surface may be used. Even in this case, the same effect as in the above embodiment can be obtained by appropriately setting the positional deviation between the center of the lens and the center of the light emitting diode.

It is a figure which shows the structure of the display apparatus which concerns on one embodiment of this invention. It is a top view which shows the structure of a backlight. It is a block diagram which shows the structure of a control part. It is a top view which shows one drive unit of a backlight. FIG. 5 is a cross-sectional view taken along line AA of the drive unit shown in FIG. 4. It is a figure which shows a mode that the light was radiate | emitted to the liquid crystal panel from each light source unit contained in the drive unit shown in FIG. FIG. 7 is a diagram illustrating a case where each center of the lens and each light source are not misaligned in the drive unit illustrated in FIG. 6. It is sectional drawing which shows an example of a board | substrate and a light source unit. It is the graph which showed each light distribution characteristic of the light source unit shown in FIG. It is a figure used in order to demonstrate the number of the light source units contained in a drive unit, and the irradiation area on the liquid crystal panel by the light of the whole light source unit. FIG. 11 is a cross-sectional view illustrating a state in which three drive units including nine light source units illustrated in FIG. 10 are arranged to emit light to a liquid crystal panel. It is a top view which shows the display screen of a liquid crystal panel. FIG. 12 is a cross-sectional view illustrating a state in which light is emitted from each drive unit to the liquid crystal panel when each light source unit included in the three drive units illustrated in FIG. 11 is the light source unit according to the present embodiment. is there (A) is a top view which shows the light source unit which concerns on another one Embodiment of this invention. (B) is a side view which shows the light source unit which concerns on another one Embodiment of this invention. (C) is the graph which showed the light distribution characteristic from a light source unit. (A) is a top view which shows the light source unit which concerns on another one Embodiment of this invention. (B) is a side view which shows the light source unit which concerns on another one Embodiment of this invention. (C) is the graph which showed the light distribution characteristic from a light source unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Display panel 2 ... Backlight 3 ... Control part 4, 104 ... Liquid crystal panel 5, 5a, 5b, 105, 200b, 300b ... Light source unit 6, 106 ... Drive unit 7 ... Video signal detection circuit 7a ... Luminance signal detection circuit 7b ... Color signal detection circuit 8 ... Luminance setting unit 9 ... Liquid crystal panel control circuit 10 ... Backlight drive unit 11 ... Center point 15 ... Unit region 16 ... Insulating layer 17 ... Submount substrate 18 ... Thermally conductive adhesive 19 ... Electrode unit 20 ... Bonding wire 21 ... Source driver 22 ... Gate driver 23 ... Substrate 24 ... Video signal 51, 51a, 51b ... Light source 51a, 51b ... Light emitting diode chip 52, 52a, 52b, 252b, 352b ... Lens 52a, 52b ... Resin molded body 100 ... Display device 112 ... Display screen

Claims (5)

A substrate,
A plurality of light sources disposed in at least one of the plurality of regions of the substrate;
A plurality of lenses provided for each of the light sources for setting light distribution from the plurality of light sources, wherein the centers of the plurality of lenses are outside the plurality of light sources with respect to the center of the one region. And a plurality of lenses arranged so as to be displaced. The lighting device according to claim 1,
The center of each of the plurality of lenses is located on a line in a direction from the center of the one region toward the light source and on an extended line from the light source. The lighting device according to claim 1,
A reference light source disposed at the center of the one region;
An illumination device further comprising: a reference lens provided in the reference light source for setting a light distribution from the reference light source, wherein the reference lens has a center arranged at the center of the one region. . A display panel that displays video according to the input video signal;
A substrate, a plurality of light sources arranged in at least one of the plurality of regions of the substrate, and a plurality of lenses provided for each of the light sources for setting light distribution from the plurality of light sources. Each center of the plurality of lenses has a plurality of lenses arranged so as to be shifted outward from the plurality of light sources with respect to the center of the one region, and the display panel includes the plurality of light sources. A lighting device that emits light of
A display device comprising: a control unit that controls luminance of light from the plurality of light sources in units of the regions in accordance with the video signal. A display panel that displays video according to the input video signal;
A substrate, a plurality of light sources arranged in at least one of the plurality of regions of the substrate, and a plurality of lenses provided for each of the light sources for setting light distribution from the plurality of light sources. Each center of the plurality of lenses has a plurality of lenses arranged so as to be shifted outward from the plurality of light sources with respect to the center of the one region, and the display panel includes the plurality of light sources. A lighting device that emits light of
An electronic apparatus equipped with a display device comprising: a control unit that controls luminance of light from the plurality of light sources in units of regions according to the video signal.