JPWO2019201172A5 - - Google Patents

Claims (17)

A back surface substrate having an accommodation space formed on the inner surface side, a reflection sheet provided on the inner surface of the back surface substrate, and a plurality of light emitting elements are provided, and at least one light modification region provided on the reflection sheet is further expanded. It has at least one light conversion element capable of optically processing the light emitted from the light emitting element in the light modification region.
The at least one light modification region includes a plurality of first light modification regions, at least one ground light modification region, and at least one third light modification region.
The second light modification region is adjacent to the first light modification region and is arranged between two adjacent rows of light emitting elements.
The back surface substrate has a bottom plate and a side wall provided on the edge of the bottom plate, and the third light modification region is arranged on a reflective sheet of the bottom plate adjacent to the side wall, and the first. Adjacent to the light modification area of
Each of the first light-modified regions and at least one of the third light-modified regions has a plurality of optical conversion elements arranged in a plurality of rows and a plurality of columns, and the same third light-modified region. The size of each light conversion element is a positive correlation with the distance between the light conversion element and the light emitting element . The backlight source according to claim 1, wherein the light emitted from the light emitting element is monochromatic light, and the optical process is a process of converting the monochromatic light into mixed light. The backlight source according to claim 2, wherein the mixed light is white light. The side wall has a vertical side wall and a horizontal side wall, and the light modification region is provided on a reflective sheet arranged on at least one of the side wall and the bottom plate. 2. The backlight light source according to 2. The plurality of light emitting elements are arranged in a plurality of rows and a plurality of columns on the bottom plate of the accommodation space, and the plurality of first light modification regions are provided on at least one of the lateral side wall and the vertical side wall to emit light. The first light modification region provided on the lateral side wall along the row direction of the element corresponds to the light emitting element row, and the first light modifying region provided on the vertical side wall along the row direction of the light emitting element. The fourth aspect of claim 4 , wherein the light modification region corresponds to a row of light emitting elements, the row direction of the light emitting element is parallel to the lateral side wall, and the column direction of the light emitting element is parallel to the vertical side wall. Backlight light source. The backlight according to claim 1 , wherein in the same first light modification region, the size of the light conversion element has a negative correlation with the distance from the light source corresponding to the first light modification region. light source. The backlight source according to claim 6 , wherein the light emitting element has a width of the first light modification region along the row direction equal to or less than the width of the sealing region of the light emitting element. The second light-modified region is provided on at least one of the lateral side wall and the vertical side wall, and the second light-modified region is provided adjacent to the first light-modified region. 5. The backlight light source according to 5. The light modification region further includes at least one fourth light modification region, and a plurality of the light conversion elements in the fourth light modification region are arranged so as to surround the corresponding light emitting element. The backlight light source according to any one of 4 to 8 . The backlight source according to claim 9 , wherein the size of the light conversion element in the fourth light modification region has a negative correlation with the distance from the light emitting element corresponding to the fourth light modification region. The light emitting element has a lens element and a light emitting diode, the light emitting diode is arranged on the bottom plate, the lens element is arranged on the top of the light emitting diode, and the lens element and the reflection sheet on the bottom plate. There is a gap between them,
The backlight source according to claim 10 , wherein the orthogonal projection of the fourth light modification region onto the reflective sheet is within the orthogonal projection of the lens element onto the reflective sheet. 11. The optical conversion element is arranged in a staggered manner in the same first light modification region, the second light modification region, the third light modification region, and the fourth light modification region. Backlight light source described in. The shape of the light conversion element is circular, and the size of the light conversion element in the first light modification region, the second light modification region, the third light modification region, and the fourth light modification region is The backlight source according to claim 12 , which is the diameter of the light conversion element. The backlight source according to claim 1, wherein the light conversion element has a quantum dot material. The backlight source according to claim 1, wherein the light emitting element can emit blue light. A backlight module comprising a backlight light source and a quantum dot layer, wherein the backlight light source is the backlight light source according to any one of claims 1 to 15 , and the quantum dot layer is the backlight. A backlight module provided on the light emitting side of a light light source and capable of converting light emitted from a light emitting element into white light. A display device including a display panel and a backlight module provided on the light source side of the display panel, wherein the backlight module is the backlight module according to claim 16 , and the quantum dot layer is the quantum dot layer. A display device located between the backlight source and the display panel.